Same problem....tried everything in the previous replies--nothing worked. Very frustrating as other apps are working. Maybe I need more space but not sure why all of a sudden...
Thanks
Here's the etrecheck:
EtreCheck version: 3.4.6 (460)
Report generated 2018-01-24 13:32:23
Download EtreCheck from https://etrecheck.com
Runtime: 2:58
Performance: Excellent
Click the [Lookup] links for more information from Apple Support Communities.
Click the [Details] links for more information about that line.
Problem: Apps are crashing
Description:
Safari no longer opens
App store no longer opens
Hardware Information: ⓘ
MacBook Pro (13-inch, Mid 2012)
[Technical Specifications] - [User Guide] - [Warranty & Service]
MacBook Pro - model: MacBookPro9,2
1 2.9 GHz Intel Core i7 (i7-3520M) CPU: 2-core
8 GB RAM Upgradeable - [Instructions]
BANK 0/DIMM0
4 GB DDR3 1600 MHz ok
BANK 1/DIMM0
4 GB DDR3 1600 MHz ok
Handoff/Airdrop2: supported
Wireless: en1: 802.11 a/b/g/n
Battery: Health = Check Battery - Cycle count = 776
iCloud Quota: 4.82 GB available
Video Information: ⓘ
Intel HD Graphics 4000 - VRAM: 1536 MB
Color LCD 1280 x 800
Disk Information: ⓘ
APPLE HDD HTS541075A9E662 disk0: (750.16 GB) (Rotational)
[Show SMART report]
EFI (disk0s1 - MS-DOS FAT32) <not mounted> [EFI]: 210 MB
(disk0s2) <not mounted> [CoreStorage Container]: 749.30 GB
(disk0s3) <not mounted> [Recovery]: 650 MB
MATSHITADVD-R UJ-8A8 ()
USB Information: ⓘ
USB20Bus
hub_device
hub_device
Apple Inc. Apple Internal Keyboard / Trackpad
Apple Computer, Inc. IR Receiver
Apple Inc. BRCM20702 Hub
Apple Inc. Bluetooth USB Host Controller
USB20Bus
hub_device
Apple Inc. FaceTime HD Camera (Built-in)
USB30Bus
Thunderbolt Information: ⓘ
Apple Inc. thunderbolt_bus
Virtual disks: ⓘ
Macintosh HD (disk1 - Journaled HFS+) / [Startup]: 748.93 GB (579.74 GB free)
Encrypted AES-XTS (Unlocked)
Physical disk: disk0s2 749.30 GB Online
System Software: ⓘ
macOS High Sierra 10.13.2 (17C205) - Time since boot: less than an hour
Gatekeeper: ⓘ
Mac App Store and identified developers
Kernel Extensions: ⓘ
/Users/[redacted]/Apowersoft/Mac Online Launcher/Mac Online Launcher.app
[loaded] com.Apowersoft.driver.AudioDevice (1.6.7 - SDK 10.11) [Lookup]
[loaded] com.Cycling74.driver.Soundflower (1.0.0 - SDK 10.8) [Lookup]
Startup Items: ⓘ
Freecorder: Path: /Library/StartupItems/Freecorder
Startup items no longer function in OS X Yosemite or later
System Launch Agents: ⓘ
[not loaded] 8 Apple tasks
[loaded] 184 Apple tasks
[running] 98 Apple tasks
System Launch Daemons: ⓘ
[not loaded] 37 Apple tasks
[loaded] 191 Apple tasks
[running] 104 Apple tasks
Launch Agents: ⓘ
[failed] com.adobe.ARMDCHelper.cc24aef4a1b90ed56a725c38014c95072f92651fb65e1bf9c8e43c37a 23d420d.plist (Adobe Systems, Inc. - installed 2017-01-10) [Lookup]
[running] com.epson.Epson_Low_Ink_Reminder.launcher.plist (EPSON - installed 2015-09-02) [Lookup]
[running] com.epson.ecrp.launcher.plist (Seiko Epson Corporation - installed 2017-09-06) [Lookup]
[loaded] com.epson.esua.launcher.plist (Seiko Epson Corporation - installed 2017-11-30) [Lookup]
[running] com.epson.eventmanager.agent.plist (Seiko Epson Corporation - installed 2017-07-02) [Lookup]
[running] com.epson.scannermonitor.plist (Seiko Epson Corporation - installed 2017-07-02) [Lookup]
[loaded] com.google.keystone.agent.plist (Google, Inc. - installed 2017-09-27) [Lookup]
[loaded] com.oracle.java.Java-Updater.plist (? 6f46a07e 72ac4dde - installed 2017-10-30) [Lookup]
Launch Daemons: ⓘ
[loaded] com.adobe.ARMDC.Communicator.plist (Adobe Systems, Inc. - installed 2017-01-10) [Lookup]
[loaded] com.adobe.ARMDC.SMJobBlessHelper.plist (Adobe Systems, Inc. - installed 2017-01-10) [Lookup]
[loaded] com.adobe.fpsaud.plist (Adobe Systems, Inc. - installed 2017-12-14) [Lookup]
[loaded] com.google.keystone.daemon.plist (Google, Inc. - installed 2017-10-09) [Lookup]
[loaded] com.microsoft.autoupdate.helper.plist (Microsoft Corporation - installed 2017-04-11) [Lookup]
[loaded] com.microsoft.office.licensing.helper.plist (? 6d8cb30e 8b29c3ef - installed 2012-04-02) [Lookup]
[loaded] com.oracle.java.Helper-Tool.plist (Shell Script e3fefdd2 - installed 2017-09-05) [Lookup]
[loaded] org.macosforge.xquartz.privileged_startx.plist (? 77ab826e 374a0b2d - installed 2012-06-01) [Lookup]
User Launch Agents: ⓘ
[loaded] com.dropbox.DropboxMacUpdate.agent.plist (Dropbox, Inc. - installed 2017-09-24) [Lookup]
User Login Items: ⓘ
AdobeResourceSynchronizer Application
(/Applications/Adobe Acrobat Reader DC.app/Contents/Helpers/AdobeResourceSynchronizer.app)
Dropbox Application
(/Applications/Dropbox.app)
Internet Plug-ins: ⓘ
AdobeAAMDetect: AdobeAAMDetect 2.0.0.0 (installed 2014-02-22) [Lookup]
FlashPlayer-10.6: 28.0.0.137 (installed 2018-01-09) [Lookup]
QuickTime Plugin: 7.7.3 (installed 2017-12-21)
AdobePDFViewerNPAPI: 17.012.20098 (installed 2017-12-04) [Lookup]
AdobePDFViewer: 18.009.20050 (installed 2017-12-04) [Lookup]
Flash Player: 28.0.0.137 (installed 2018-01-09) [Lookup]
o1dbrowserplugin: 5.41.3.0 (installed 2015-12-16) [Lookup]
SharePointBrowserPlugin: 14.7.2 (installed 2017-03-15) [Lookup]
googletalkbrowserplugin: 5.41.3.0 (installed 2015-12-11) [Lookup]
Silverlight: 5.1.50428.0 (installed 2016-06-23) [Lookup]
JavaAppletPlugin: Java 8 Update 151 build 12 (installed 2017-10-30) Check version
Safari Extensions: ⓘ
[disabled] AdBlock - BetaFish, Inc. - https://getadblock.com (installed 2015-10-14)
3rd Party Preference Panes: ⓘ
Flash Player (installed 2017-12-14) [Lookup]
Java (installed 2017-10-30) [Lookup]
Time Machine: ⓘ
Skip System Files: NO
Auto backup: YES
Volumes being backed up:
Macintosh HD: Disk size: 748.93 GB Disk used: 169.18 GB
Destinations:
Busy Bee [Local]
Total size: 499.97 GB
Total number of backups: 1
Oldest backup: 5/5/16, 8:28 AM
Last backup: 5/5/16, 8:28 AM
Size of backup disk: Too small
Backup size 499.97 GB < (Disk used 169.18 GB X 3)
Top Processes by CPU: ⓘ
7% WindowServer
2% kernel_task
1% plugin-container
0% fontd
0% mds
Top Processes by Memory: ⓘ
705 MB kernel_task
343 MB firefox
257 MB plugin-container
192 MB Dropbox
166 MB mds_stores
Top Processes by Network Use: ⓘ
Input Output Process name
75 KB 97 KB Dropbox
139 KB 21 KB mDNSResponder
6 KB 18 KB apsd
7 KB 2 KB cloudd
522 B 354 B netbiosd
Top Processes by Energy Use: ⓘ
9.74 WindowServer
1.70 plugin-container
1.18 firefox
0.58 EEventManager
Virtual Memory Information: ⓘ
4.65 GB Available RAM
2.21 GB Free RAM
3.35 GB Used RAM
2.44 GB Cached files
0 B Swap Used
Software installs (last 30 days): ⓘ
EPSON Printer Driver: (installed 2017-12-30)
EPSON Printer Driver: (installed 2017-12-30)
EPSON Printer Driver: (installed 2017-12-30)
Adobe Flash Player: (installed 2018-01-09)
Install information may not be complete.
Diagnostics Events (last 3 days for minor events): ⓘ
2018-01-24 13:29:08 quicklookd.app Crash [Open]
Cause: qlmanage --diag 6571367.1654591 6571367.8498614 6571367.1905303 6571367.1096826 6571367.8498552 6571367.1096829
last generator in main thread: com.apple.qlgenerator.office
last threaded generator: com.apple.qlgenerator.pdf
2018-01-24 12:49:54 Safari.app Hang [Open]
2018-01-24 12:02:05 com.apple.Safari.History High CPU use [Open] [Details]
Files deleted by EtreCheck: ⓘ
2018-01-24 13:11:17 - com.adobe.ARM.[...].plist - Unknown
2018-01-24 13:11:17 - ~/Library/LaunchAgents/com.skype.skype.shareagent.plist - Unknown
2018-01-24 13:11:33 - /Library/LaunchAgents/com.adobe.AAM.Updater-1.0.plist - Unknown
2018-01-24 13:11:33 - /Library/LaunchAgents/com.adobe.AdobeCreativeCloud.plist - Unknown