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Question: How to downgrade to 10.13.3?

Ever since the upgrade to 10.13.4, my iMac (late 2017, 24GB of RAM) has been *incredibly* unstable, where the OS decides that it's out of memory (even though only about 5GB are in use by any processes) and Activity Monitor shows all 24GB used. Sometimes the "you are running low on application memory" window comes up but usually the whole system freezes entirely and I have to physically reset it.

Anyway, this wasn't happening before 10.13.4, so is there a way to downgrade back to 10.13.3 to see if that's what's causing it?

iMac (Retina 5K, 27-inch, 2017), macOS High Sierra (10.13.4), 24GB RAM

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Apr 21, 2018 11:03 PM in response to fluffy In response to fluffy

Why don't you run etrecheck again and post the report back here, that is the point of it.

Also if you are determined to roll back to 10.13.3, then make a note of all the work you have done since you updated to 10.13.4 and store all your new and updated files etc in a folder on another drive or USB. You could then go back to 10.13.3 and copy over these newer files.

Apr 21, 2018 11:03 PM

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Apr 21, 2018 11:10 PM in response to Eau Rouge In response to Eau Rouge

EtreCheck version: 4.2.1 (4C020)

Report generated: 2018-04-21 22:12:32

Download EtreCheck from

Runtime: 3:25

Performance: Good

Problem: Other problem

Major Issues:

Anything that appears on this list needs immediate attention.

Kernel panics - This system has experienced kernel panics. This could be a sign of hardware failure.

Minor Issues:

These issues do not need immediate attention but they may indicate future problems.

Apps crashing - There have been numerous app crashes.

Unsigned files - There is unsigned software installed. They appear to be legitimate but should be reviewed.

32-bit Apps - This machine has 32-bits apps that may have problems in the future.

Hardware Information:

iMac (Retina 5K, 27-inch, 2017)

iMac Model: iMac18,3

1 3.8 GHz Intel Core i5 (i5-7600K) CPU: 4-core

24 GB RAM Upgradeable

BANK 0/DIMM0 - 4 GB DDR4 2400 ok

BANK 0/DIMM1 - 8 GB DDR4 2400 ok

BANK 1/DIMM0 - 4 GB DDR4 2400 ok

BANK 1/DIMM1 - 8 GB DDR4 2400 ok

Video Information:

Radeon Pro 580 - VRAM: 8192 MB



disk0 - APPLE SSD SM0128L 121.33 GB (Solid State - TRIM: Yes)

Internal PCI-Express 8.0 GT/s x4 NVM Express

disk0s1 - EFI () [EFI] 315 MB

disk0s2 () [Core Storage Container] 120.88 GB

disk2 - Macintosh HD (Journaled HFS+) [Fusion Drive] 2.11 TB

disk0s3 - B*******X () [Recovery] 134 MB

disk1 - APPLE HDD ST2000DM001 2.00 TB (Mechanical)

Internal SATA 6 Gigabit Serial ATA

disk1s1 - EFI (MS-DOS FAT32) [EFI] 210 MB

disk1s2 () [Core Storage Container] 2.00 TB

disk2 - Macintosh HD (Journaled HFS+) [Fusion Drive] 2.11 TB

disk1s3 - Recovery HD (Journaled HFS+) [Recovery] 650 MB

disk3 - asmedia ASMT1051 1.00 TB

External USB 5 Gbit/s

disk3s1 - EFI (MS-DOS FAT32) [EFI] 210 MB

disk3s2 () 1000.00 GB

disk4s1 - p***t (APFS) 1000.00 GB (900.62 GB used)

Mounted Volumes:

disk2 - Macintosh HD [Fusion Drive] 2.11 TB (1.36 TB free)

Journaled HFS+

Mount point: /

disk4s1 - p***t 1000.00 GB (99.17 GB free)


Mount point: /Volumes/p***t

disk5s2 - T******************s 4.29 TB (3.02 TB free)

Case-Sensitive Journaled HFS+

Mount point: /Volumes/T******************s


Interface usbmodem146410: MT65xx Preloader

Interface en0: Ethernet

One IPv4 address

2 IPv6 addresses

Interface en6: iPad

Interface en5: iPhone

Interface fw0: Thunderbolt FireWire

Interface en1: Wi-Fi

802.11 a/b/g/n/ac

One IPv4 address

2 IPv6 addresses

Interface en4: Bluetooth PAN

Interface bridge0: Thunderbolt Bridge

iCloud Quota: 3.83 GB available

System Software:

macOS High Sierra 10.13.4 (17E199)

Time since boot: Less than an hour

System Load: 2.26 (1 min ago) 3.06 (5 min ago) 3.20 (15 min ago)





Mac App Store and identified developers

System Integrity Protection


Unsigned Files:

Launchd: /Library/LaunchDaemons/org.virtualbox.startup.plist

Executable: /Library/Application Support/VirtualBox/LaunchDaemons/ restart

Details: Exact match found in the whitelist - probably OK

Launchd: /Library/LaunchAgents/com.wacom.DataStoreMgr.plist

Executable: /Library/PrivilegedHelperTools/ com.DataStoreMgr

Details: Exact match found in the whitelist - probably OK

Launchd: /Library/LaunchDaemons/

Executable: /Library/Extensions/intelhaxm.kext/Contents/Resources/

Details: Exact match found in the whitelist - probably OK

Launchd: /Library/LaunchDaemons/com.makerbot.conveyor.plist

Executable: /Library/MakerBot/conveyor-svc --config_file /Library/MakerBot/conveyor.conf

Details: Exact match found in the whitelist - probably OK

Launchd: /Library/LaunchAgents/

Executable: /Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Resources/Java Updater -bgcheck

Details: Exact match found in the whitelist - probably OK

Launchd: /Library/LaunchDaemons/

Executable: /Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Resources/Helper-Tool

Details: Exact match found in the whitelist - probably OK

Launchd: ~/Library/LaunchAgents/com.valvesoftware.steamclean.plist

Executable: /Users/***/Library/Application Support/Steam/SteamApps/steamclean

Details: Exact match found in the whitelist - probably OK

Launchd: /Library/LaunchDaemons/com.wacom.UpdateHelper.plist

Executable: /Library/PrivilegedHelperTools/ com.UpdateHelper

Details: Exact match found in the whitelist - probably OK

32-bit Applications:

86 32-bit apps

Kernel Extensions:

/Library/Application Support/VirtualBox

[Loaded] VBoxDrv.kext (Oracle America, Inc., 5.2.8)

[Loaded] VBoxNetAdp.kext (Oracle America, Inc., 5.2.8)

[Loaded] VBoxNetFlt.kext (Oracle America, Inc., 5.2.8)

[Loaded] VBoxUSB.kext (Oracle America, Inc., 5.2.8)


[Not Loaded] FTDIKext.kext (Wacom Technology Corp., 1.0 - SDK 10.12)

[Loaded] intelhaxm.kext (Intel Corporation Apps, 6.2.0 - SDK 10.9)

[Loaded] MSMFramebuffer.kext (SHAPE GmbH, 3.5 - SDK 10.13)

[Loaded] MSMVideoDevice.kext (SHAPE GmbH, 3.5 - SDK 10.13)

[Loaded] SiLabsUSBDriver64.kext (Wacom Technology Corp., 3.0.0d1)

[Not Loaded] Wacom Tablet.kext (Wacom Technology Corp., Wacom Tablet 6.3.27-2 - SDK 10.12)


[Loaded] Soundflower.kext (Splashtop Inc., 1.6.7 - SDK 10.9)

[Loaded] SteamInputX.kext (3083.39.61 - SDK 10.8)

[Loaded] PaeFireStudio.kext (TC Applied Technologies, 4.2.1 - SDK 10.8)

System Launch Agents:

[Not Loaded]

7 Apple tasks


161 Apple tasks


124 Apple tasks


One Apple task

System Launch Daemons:

[Not Loaded]

34 Apple tasks


177 Apple tasks


124 Apple tasks

Launch Agents:


com.adobe.AdobeCreativeCloud.plist (Adobe Systems, Inc. - installed 2018-02-23)


com.wacom.DataStoreMgr.plist (? ef46b86d - installed 2017-12-13)

[Not Loaded]

com.adobe.AAM.Updater-1.0.plist (? ffb65062 - installed 2017-07-14)


org.macosforge.xquartz.startx.plist (Apple Inc. - XQuartz - installed 2016-10-26)


com.wacom.wacomtablet.plist (Wacom Technology Corp. - installed 2017-12-13)


com.adobe.GC.Invoker-1.0.plist (Adobe Systems, Inc. - installed 2018-01-24)

[Loaded] (? 9dbdb38d - installed 2017-12-19)

Launch Daemons:

[Loaded] (? 42f307e7 - installed 2017-07-13)


com.tunnelbear.mac.tbeard.plist (TunnelBear, Inc. - installed 2017-11-01)


com.native-instruments.NativeAccess.Helper2.plist (Native Instruments GmbH - installed 2017-11-25)

[Not Loaded]

org.virtualbox.startup.plist (? 700b9385 - installed 2018-03-07)


com.makerbot.conveyor.plist (? 72ef1f2e - installed 2018-01-12)


com.wacom.displayhelper.plist (Apple - installed 2018-03-27)


com.adobe.acc.installer.plist (Adobe Systems, Inc. - installed 2018-02-23)


com.adobe.fpsaud.plist (Adobe Systems, Inc. - installed 2018-03-26)

[Loaded] (? e3fefdd2 - installed 2017-12-19)


org.macosforge.xquartz.privileged_startx.plist (Apple Inc. - XQuartz - installed 2016-10-26)


com.adobe.agsservice.plist (Adobe Systems, Inc. - installed 2018-01-24)


com.wacom.UpdateHelper.plist (? 247c9951 - installed 2017-12-13)


tc.tctechnologies.PaeFireStudio.plist (TC Applied Technologies - installed 2017-02-13)

User Launch Agents:


com.spotify.webhelper.plist (Spotify - installed 2018-01-31)

[Loaded] (Google, Inc. - installed 2018-02-03)


com.dropbox.DropboxMacUpdate.agent.plist (Dropbox, Inc. - installed 2018-04-12)


com.valvesoftware.steamclean.plist (? 0 - installed 2018-04-01)

[Not Loaded]

com.hp.devicemonitor.plist (HP Inc. - installed 2018-03-24)


com.adobe.GC.Invoker-1.0.plist (Adobe Systems, Inc. - installed 2018-01-26)

[Not Loaded]

org.virtualbox.vboxwebsrv.plist (Oracle America, Inc. - installed 2018-03-07)


com.adobe.AAM.Updater-1.0.plist (? 0 - installed 2017-07-14)

User Login Items:

Time Out Application (Mac App Store


NIHardwareAgent Application (Native Instruments GmbH

(/Library/Application Support/Native Instruments/Hardware/

Magnet Application (Mac App Store


NIHostIntegrationAgent Application (Native Instruments GmbH

(/Library/Application Support/Native Instruments/Hardware/

Dropbox Application (Dropbox, Inc.


LoginItemHelper SMLoginItem (Mac App Store - installed 2017-07-14)


BarTunesHelper SMLoginItem (Mac App Store - installed 2017-07-14)


Time Out App Launcher SMLoginItem (Mac App Store - installed 2018-03-25)

(/Applications/Time Out App

1Password mini SMLoginItem (AgileBits Inc. - installed 2018-03-18)

(/Applications/1Password app)

Internet Plug-ins:

FlashPlayer-10.6: (installed 2018-04-10)

Flash Player: (installed 2018-04-10)

QuickTime Plugin: 7.7.3 (installed 2018-04-07)

JavaAppletPlugin: Java 8 Update 161 build 12 (installed 2018-01-21)

AdobeAAMDetect: (installed 2018-02-23)

Safari Extensions:

1Password Safari Extension Companion - Mac App Store - (installed 2018-03-15)

1Password.safariextz - AgileBits - (installed 2018-03-24)

uBlock.safariextz - Chris Aljoudi - (installed 2017-07-14)

3rd Party Preference Panes:

Flash Player (installed 2018-03-26)

Java (installed 2018-01-21)

WacomTablet (installed 2017-12-13)

Time Machine:

Skip System Files:

Mobile backups:

Auto backup: Yes

Volumes being backed up:

Macintosh HD: Disk size: 2.11 TB - Disk used: 752.66 GB


b*****s [Network] (Last used)

Total size: 4.29 TB

Total number of backups: 84

Oldest backup: 2017-07-15 03:03:38

Last backup: 2018-04-21 21:45:58

Top Processes by CPU:

Process (count)


% of CPU

kextcache (4)



trustd (4)



Discord Helper (2)

Hammer & Chisel Inc.





Time Sink

Mac App Store


Top Processes by Memory:

Process (count)


RAM usage



1.75 GB



1.22 GB

mdworker (31)


920 MB



425 MB


317 MB

Top Processes by Network Use:







310 MB

72 MB


Hammer & Chisel Inc.

3 MB

25 KB



473 KB

109 KB


Dropbox, Inc.

219 KB

170 KB



18 KB

21 KB

Top Processes by Energy Use:

Process (count)


Energy usage (0-100)

Discord Helper (2)

Hammer & Chisel Inc.


Time Sink

Mac App Store









Hammer & Chisel Inc.


Virtual Memory Information:

Available RAM

15.48 GB

Free RAM

7.80 GB

Used RAM

8.52 GB

Cached files

7.69 GB

Swap Used

0 B

Diagnostics Information (past 7 days):

2018-04-21 21:55:55 Last Shutdown Cause: 3 - Hard shutdown (once)

2018-04-21 21:54:31 CPU (2 times)

2018-04-21 21:52:54 Crash (11 times)

*** CFRelease() called with NULL ***

2018-04-21 21:52:11 WindowServer Crash (once)

IOSurface creation failed with size [850 x 862].

If size looks sane, this is likely due to an IOSurface leak and system IOSurface limit reached.

Unable to collect IOSurface usage statistics.

2018-04-21 15:32:11 Kernel Panic (2 times)

3rd party kernel extensions:

com.shapeservices.msm.driver.MSMFramebuffer 3.5.0

tc.tctechnologies.driver.PaeFireStudio 4.2.1 46437

com.silabs.driver.CP210xVCPDriver64 3.0.0d1 6.2.0

org.virtualbox.kext.VBoxDrv 5.2.8

org.virtualbox.kext.VBoxNetFlt 5.2.8

com.Cycling74.driver.Soundflower 1.6.7

com.shapeservices.msm.driver.MSMVideoDevice 3.5.0

org.virtualbox.kext.VBoxNetAdp 5.2.8

org.virtualbox.kext.VBoxUSB 5.2.8

com.valvesoftware.SteamInput 3083.39.62

2018-04-21 15:27:51 Crash (3 times)

2018-04-21 15:25:13 VDC.plugin Crash (2 times)

2018-04-21 12:26:02 CPU (3 times)

2018-04-18 12:51:04 Adobe CEF Crash (2 times)

2018-04-18 12:50:51 Universal Crash (3 times)

2018-04-18 12:50:40 Crash (once)

2018-04-17 22:03:36 Crash (once)

*** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'bear trap for: <rdar:/problem/20935868> -- we are registered with a backdrop, but are resetting its cached value to nil. This makes unregistration with it impossible'

abort() called

terminating with uncaught exception of type NSException

End of report

Apr 21, 2018 11:10 PM

Reply Helpful

Apr 21, 2018 11:23 PM in response to fluffy In response to fluffy

Okay so on a hunch I tried uninstalling iDisplay, which hadn't been working in quite some time and which I wasn't using. After the reboot my machine stopped showing the constant increasing memory pressure, and it feels way more stable and responsive.

So, it was probably that.

Apr 21, 2018 11:23 PM

Reply Helpful

Apr 21, 2018 11:58 PM in response to fluffy In response to fluffy

You have a lot of items in your login items, do you really need all these apps to open when your mac starts up. If you don't need some of them at log in then go to System Preferences> Users & Groups> Login Items, highlight the app(s) you want to remove and press the minus button.

Check also that your third party apps have the latest software available, you have many that are causing the kernel panics, so give them a check. also check that any hardware you use with your Mac has the latest drivers for High Sierra.

It might also be useful to download and then install the 10.13.4 Combo update, if you haven't already done so.

Download macOS High Sierra 10.13.4 Combo Update

It resets some system files and caches that may have become corrupt over time.

I see you removed iDisplay and that has helped.

Apr 21, 2018 11:58 PM

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User profile for user: fluffy

Question: How to downgrade to 10.13.3?