The terminal suggestion did not work. Here is the Etrecheck report:
EtreCheck version: 3.4.6 (460)
Report generated 2018-02-08 07:31:44
Download EtreCheck from http://etrecheck.com
Runtime: 3:45
Performance: Good
Click the [Lookup] links for more information from Apple Support Communities.
Click the [Details] links for more information about that line.
Click the [Clean up] link to delete unused files.
Problem: Other problem
Description:
Preview does not work as default
Hardware Information:β
iMac (24-inch, Early 2008)
[Technical Specifications] - [User Guide] - [Warranty & Service]
iMac - model: iMac8,1
1 3.06 GHz Intel Core 2 Duo (Duo) CPU: 2-core
4 GB RAM
BANK 0/DIMM0
2 GB DDR2 SDRAM 800 MHz ok
BANK 1/DIMM1
2 GB DDR2 SDRAM 800 MHz ok
Handoff/Airdrop2: not supported
Wireless: en1: 802.11 a/b/g/n
Video Information:β
NVIDIA GeForce 8800 GS - VRAM: 512 MB
iMac 1920 x 1200
Disk Information:β
ST3500418ASQ disk0: (465.76 GB) (Rotational)
[Show SMART report]
(disk0s1) <not mounted> : 210 MB
Snow Leopard (disk0s2 - Journaled HFS+) / [Startup]: 499.76 GB (204.43 GB free)
USB Information:β
EHCI Root Hub Simulation
Apple, Inc. Keyboard Hub
Wacom Co.,Ltd. CTE-450
USB2.0 Hub
Apple, Inc Apple Keyboard
USB2.0 Hub
EHCI Root Hub Simulation
Apple Inc. Built-in iSight
Apple Inc. Apple USB Ethernet Adapter
UHCI Root Hub Simulation
Apple Inc. BRCM2046 Hub
Apple Inc. Bluetooth USB Host Controller
UHCI Root Hub Simulation
UHCI Root Hub Simulation
Apple Computer, Inc. IR Receiver
UHCI Root Hub Simulation
UHCI Root Hub Simulation
Firewire Information:β
LaCie d2 Quadra v3C 400mbit - 800mbit max
(disk4s1) <not mounted> : 210 MB
Maverick (disk4s2 - Journaled HFS+) /Volumes/Maverick : 373.97 GB (348.25 GB free)
Recovery HD (disk4s3 - Journaled HFS+) <not mounted> [Recovery]: 650 MB
Yosemite (disk4s4 - Journaled HFS+) /Volumes/Yosemite : 373.32 GB (358.66 GB free)
Recovery HD (disk4s5 - Journaled HFS+) <not mounted> [Recovery]: 650 MB
LaCie Backup (disk4s6 - Journaled HFS+) /Volumes/LaCie Backup : 2.25 TB (553.78 GB free)
LaCie d2 quadra (button) 400mbit - 800mbit max
(disk2s1) <not mounted> : 210 MB
Snow Leopard Back Up (disk2s2 - Journaled HFS+) /Volumes/Snow Leopard Back Up : 999.86 GB (270.79 GB free)
LaCie d2 quadra (button) 800mbit - 800mbit max
(disk1s1) <not mounted> : 210 MB
Time Machine (disk1s2 - Journaled HFS+) /Volumes/Time Machine : 1.88 TB (386.26 GB free)
OS X (disk1s3 - Journaled HFS+) /Volumes/OS X : 116.50 GB (104.70 GB free)
LaCie d2 Quadra v3C 800mbit - 800mbit max
(disk3s1) <not mounted> : 210 MB
El Capitan (disk3s2 - Journaled HFS+) /Volumes/El Capitan : 759.50 GB (591.42 GB free)
Recovery HD (disk3s3 - Journaled HFS+) <not mounted> [Recovery]: 650 MB
LaCie (disk3s4 - Journaled HFS+) /Volumes/LaCie : 3.24 TB (2.24 TB free)
System Software:β
OS X Snow Leopard 10.6.8 (10K549) - Time since boot: less than an hour
Configuration files:β
/etc/sysctl.conf - File exists but not expected
Clean up:β
/Library/LaunchAgents/com.brother.LOGINserver.plist
/Library/Printers/Brother/Utilities/Server/LOGINserver.app/Contents/MacOS/LOGIN server
Executable not found!
~/Library/LaunchAgents/com.digitalrebellion.SoftwareUpdateAutoCheck.plist
/var/folders/Ip/IpnvUuGFGoSk4Hs0fkdjoE+++TI/-Tmp-/Digital Rebellion Software Update.app/Contents/MacOS/Digital Rebellion Software Update -autocheck
Executable not found!
2 orphan files found. [Clean up]
Kernel Extensions:β
/Library/Application Support/Avast/components/fileshield/unsigned
[loaded] com.avast.FileShield (3.0.0 - SDK 10.9) [Lookup]
/Library/Application Support/Avast/components/proxy/unsigned
[loaded] com.avast.PacketForwarder (2.1 - SDK 10.11) [Lookup]
/Library/Extensions
[not loaded] com.microsoft.VirtualPC.Networking.1040 (7.0.2) [Lookup]
/System/Library/Extensions
[loaded] com.parallels.kext.prl_hid_hook (6.0 12106.692267) [Lookup]
[loaded] com.parallels.kext.prl_hypervisor (6.0 12106.692267) [Lookup]
[loaded] com.parallels.kext.prl_netbridge (6.0 12106.692267) [Lookup]
[loaded] com.parallels.kext.prl_usb_connect (6.0 12106.692267) [Lookup]
[loaded] com.parallels.kext.prl_vnic (6.0 12106.692267) [Lookup]
[not loaded] com.prolific.driver.PL2303 (1.2.1) [Lookup]
[not loaded] com.wacom.kext.pentablet (Pen Tablet 5.3.3-3 - SDK 10.8) [Lookup]
System Launch Agents:β
[not loaded] 3 Apple tasks
[loaded] 62 Apple tasks
[running] 8 Apple tasks
System Launch Daemons:β
[not loaded] 47 Apple tasks
[loaded] 90 Apple tasks
[running] 30 Apple tasks
Launch Agents:β
[running] com.avast.update-agent.plist (? ? ? - installed 2017-09-22) [Lookup]
[loaded] com.avast.userinit.plist (Shell Script bb25154c - installed 2017-09-22) [Lookup]
[failed] com.brother.LOGINserver.plist (? a1772de2 0 - installed 2013-10-07) [Lookup] - /Library/Printers/Brother/Utilities/Server/LOGINserver.app/Contents/MacOS/LOGIN server: Executable not found!
[loaded] com.hp.messagecenter.launcher.plist (? ? ? - installed 2011-05-08) [Lookup]
[running] com.hp.productresearch.plist (? 86e3d2b 93f36112 - installed 2017-04-12) [Lookup]
[loaded] com.parallels.desktop.launch.plist (? d74c2143 67ca76cf - installed 2017-12-07) [Lookup]
[running] com.parallels.vm.prl_pcproxy.plist (? 6925c007 8c3b29c9 - installed 2017-12-07) [Lookup]
[running] com.smartlaunch.usbdetection.plist (? cd07f5c2 567924a2 - installed 2017-11-14) [Lookup]
[running] com.sony.PMBPortable.AutoRun.plist (? 8c017304 1d1cbfb9 - installed 2016-05-11) [Lookup]
[running] com.wacom.pentablet.plist (? ? ? - installed 2013-09-03) [Lookup]
Launch Daemons:β
[loaded] com.adobe.fpsaud.plist (? ? ? - installed 2018-02-01) [Lookup]
[loaded] com.adobe.versioncueCS3.plist (? e716f322 9b3e398d - installed 2013-01-07) [Lookup]
[loaded] com.avast.init.plist (Shell Script fc55b6fa - installed 2017-09-22) [Lookup]
[loaded] com.avast.uninstall.plist (Shell Script 22f94791 - installed 2017-09-22) [Lookup]
[loaded] com.avast.update.plist (Shell Script d6c32197 - installed 2017-09-22) [Lookup]
[loaded] com.barebones.authd.plist (? ? ? - installed 2012-10-11) [Lookup]
[loaded] com.barebones.textwrangler.plist (? ? ? - installed 2011-02-23) [Lookup]
[loaded] com.charlessoft.pacifist.helper_10.6.plist (? ? ? - installed 2015-08-19) [Lookup]
[not loaded] com.digidesign.fwfamily.helper.plist (? 3ed06546 f59af52b - installed 2006-11-14) [Lookup]
[running] com.parallels.desktop.launchdaemon.plist (? bcbceaef 1bf82c0d - installed 2011-09-07) [Lookup]
[running] com.smithmicro.schedulerdaemon.plist (? efed0650 ae34ca7b - installed 2011-05-08) [Lookup]
[loaded] uk.co.canimaansoftware.ClamXavHelper.plist (? ? ? - installed 2017-04-08) [Lookup]
[loaded] uk.co.canimaansoftware.ClamXavHelperUpdater.plist (? ? ? - installed 2018-01-24) [Lookup]
User Launch Agents:β
[loaded] com.adobe.ARM.[...].plist (? ? ? - installed 2015-09-30) [Lookup]
[loaded] com.adobe.ARM.[...].plist (? f4d53a73 fcf28467 - installed 2015-09-23) [Lookup]
[loaded] com.apple.SafariBookmarksSyncer.plist (Apple, Inc. - installed 2018-01-20)
[loaded] com.avast.home.userinit.plist (Shell Script eacd5871 - installed 2017-09-22) [Lookup]
[loaded] com.digitalrebellion.PreferenceManagerAutoSave.plist (? ? ? - installed 2015-09-30) [Lookup]
[loaded] com.digitalrebellion.SoftwareUpdateAutoCheck.plist (? 13f81671 0 - installed 2012-12-17) [Lookup] - /var/folders/Ip/IpnvUuGFGoSk4Hs0fkdjoE+++TI/-Tmp-/Digital Rebellion Software Update.app/Contents/MacOS/Digital Rebellion Software Update: Executable not found!
[loaded] com.google.keystone.agent.plist (? ? ? - installed 2017-09-27) [Lookup]
[running] com.smithmicro.cleaning.schedulermailer.plist (? 1d5d27ab 89eade3e - installed 2011-05-08) [Lookup]
[loaded] uk.co.canimaansoftware.clamxav.UninstallWatcher.plist (? ? ? - installed 2018-01-24) [Lookup]
User Login Items:β
iCal Application
(/Applications/iCal.app)
Internet Plug-ins:β
WacomNetscape: 2.1.0-1 (installed 2013-09-03) [Lookup]
Google Earth Web Plug-in: 7.1 (installed 2013-10-07) [Lookup]
OfficeLiveBrowserPlugin: 12.3.6 (installed 2013-03-30) [Lookup]
RealPlayer Plugin: Unknown (installed 2016-08-25) [Lookup]
AdobePDFViewerNPAPI: 11.0.11 (installed 2015-12-01) [Lookup]
FlashPlayer-10.6: 28.0.0.161 (installed 2018-02-06) [Lookup]
Silverlight: 5.1.50901.0 (installed 2016-10-14) [Lookup]
WacomTabletPlugin: WacomTabletPlugin 2.1.0.2 (installed 2013-09-03) [Lookup]
Flash Player: 28.0.0.161 (installed 2018-02-06) [Lookup]
mgnContentManager: mgnContentManager 2.0.0.44 (installed 2014-09-16) [Lookup]
PepperFlashPlayer: 28.0.0.161 (installed 2018-02-07) [Lookup]
iPhotoPhotocast: 7.0 (installed 2014-01-08)
AdobePDFViewer: 11.0.11 (installed 2015-12-01) [Lookup]
GarminGpsControl: 4.0.4.0 Release (installed 2012-11-02) [Lookup]
QuickTime Plugin: 7.6.6 (installed 2018-01-20)
RL Secure Plug-In Layer: Unknown (installed 2017-11-17) [Lookup]
JavaAppletPlugin: 13.9.8 (installed 2012-06-12) Check version
User internet Plug-ins:β
ZoomUsPlugIn: 3.6.10826.1101 (installed 2017-03-31) [Lookup]
CitrixOnlineWebDeploymentPlugin: 1.0.105 (installed 2013-04-25) [Lookup]
UploadManager: Unknown (installed 2017-12-01) [Lookup]
ContentManager: Unknown (installed 2017-12-01) [Lookup]
RocketEngine: Unknown (installed 2017-12-01) [Lookup]
Safari Extensions:β
[enabled] Adblock Plus - Eyeo GmbH - https://adblockplus.org/ (installed 2016-10-26)
[not loaded] Avast Online Security - AVAST Software - http://www.avast.com (installed 2017-02-08)
Audio Plug-ins:β
iSightAudio: 7.6.6 (installed 2018-01-20)
Digidesign CoreAudio: 7.3 (installed 2006-11-14) [Lookup]
3rd Party Preference Panes:β
Adobe Version Cue CS3 (installed 2013-01-07) [Lookup]
Flash Player (installed 2018-02-01) [Lookup]
FUSE for OS X (OSXFUSE) (installed 2015-09-24) [Lookup]
Perian (installed 2011-07-23) [Lookup]
PenTablet (installed 2016-05-05) [Lookup]
Time Machine:β
Time Machine information requires OS X 10.8 "Mountain Lion" or later.
Top Processes by CPU:β
6% Microsoft Entourage
3% iTunes
3% WindowServer
2% PenTabletDriver
1% com.avast.daemon
Top Processes by Memory:β
292 MB Google Chrome
248 MB Google Chrome Helper
183 MB com.avast.daemon
168 MB Google Chrome Helper
145 MB Google Chrome Helper
Virtual Memory Information:β
43 MB Available RAM
43 MB Free RAM
3.96 GB Used RAM
0 B Cached files
26 MB Swap Used
Diagnostics Events (last 3 days for minor events):β
2018-02-05 08:37:52 PenTabletDriver.app Crash [Open]