Flash Builder 4.5.1 for Mac hanging/crashing during startup "Loading Workbench"

Question

Hello,
I'm having ongoing trouble with Flash Builder 4.5.1 hanging/crashing during startup.
Sometimes the following Terminal command fixes the issue:
cd ~/Documents/Adobe\ Flash\ Builder\ 4.5/cascaded/308971/configuration/.settings
rm org.eclipse.ui.ide.prefs
However this isn't a silver bullet solution, and sometimes the only way is to uninstall and reinstall FB4.5.
But this is a major hassle, especially after 3 or 4 times!
I am running Mac OS X 10.7 and have updated to FB 4.5.1 Premium and also installed Subversion/Subclipse as well as the BlackBerry PlayBook SDK.
Problems seem to occur when working in SVN projects.
I have also noticed that the Delete and Arrow keys and Right Click fails to work sometimes also.
Is there a way to reset / clear FB 4.5 Prefs / Workbench?
Thanks,
David Douglas
Here is the console report below:
/Applications/Adobe/Adobe\ Flash\ Builder\ 4.5/Adobe\ Flash\ Builder\ 4.5.app/Contents/MacOS/Adobe\ Flash\ Builder\ 4.5 ; exit;
!SESSION 2011-09-13 15:07:58.914 -----------------------------------------------
eclipse.buildId=M20100909-0800
java.version=1.6.0_26
java.vendor=Apple Inc.
BootLoader constants: OS=macosx, ARCH=x86, WS=cocoa, NL=en_US
Framework arguments:  -keyring /Users/david/.eclipse_keyring -showlocation
Command-line arguments:  -os macosx -ws cocoa -arch x86 -keyring /Users/david/.eclipse_keyring -consoleLog -showlocation
!ENTRY org.eclipse.core.resources 2 10035 2011-09-13 15:08:02.101
!MESSAGE The workspace exited with unsaved changes in the previous session; refreshing workspace to recover changes.
!ENTRY org.eclipse.ui 2 0 2011-09-13 15:08:02.905
!MESSAGE Warnings while parsing the commands from the 'org.eclipse.ui.commands' and 'org.eclipse.ui.actionDefinitions' extension points.
!SUBENTRY 1 org.eclipse.ui 2 0 2011-09-13 15:08:02.906
!MESSAGE Commands should really have a category: plug-in='com.qnx.flashbuilder.multiplatform.qnx.ui', id='com.qnx.flashbuilder.multiplatform.qnx.ui.commands.OpenInfoCenter', categoryId='com.qnx.flashbuilder.multiplatform.qnx.ui.commands.category.help'

Answer 1

Delete the Adobe Flash Builder 4.5 folder from your Documents (assuming you don't have anything valuable in there). That seemed to work for me, as I don't keep my projects in there but there were some temp files that were breaking it. You'll probably have to re-inport your projects.
Adobe, I'm getting very sick of your (expensive) products wasting my time.