"Adobe Flash CS5 has stopped working" error anytime i do anything - HELP PLZ!

Question

Hi there,
I have used Macromedia Flash MX for many, many moons. Finally, when I got Windows 7, I was VERY excited to get updated on MX and move to Adobe Flash Professional CS5. However, i have never once been able to use this program, as it crashes pretty much every time i try to do anything. However, since my upgrade, i've noticed a lot more crashing in MX as well (i still have it installed on my old HD and have been using it to build videos rather than CS5 since it crashes less frequently). Now, i'm at my wit's end. I get the above error message when i do pretty much anything, but most recently it's EVERY time i try to select all unused files from the library. The error message i get in MX is "Flash 6.0 r25 has stopped working," but it's the same exact problem in the problem signature as CS5's:
Problem signature:
  Problem Event Name:    APPCRASH
  Application Name:    Flash.exe
  Application Version:    11.0.0.485
  Application Timestamp:    4badda9d
  Fault Module Name:    Flash.exe
  Fault Module Version:    11.0.0.485
  Fault Module Timestamp:    4badda9d
  Exception Code:    c0000005
  Exception Offset:    005c0478
  OS Version:    6.1.7601.2.1.0.256.1
  Locale ID:    1033
  Additional Information 1:    0a9e
  Additional Information 2:    0a9e372d3b4ad19135b953a78882e789
  Additional Information 3:    0a9e
  Additional Information 4:    0a9e372d3b4ad19135b953a78882e789
If i try to select "Check online for a solution," in MX it just kills out of the program, but in CS5 it gives me a second error before killing out:
Problem signature:
  Problem Event Name:    APPCRASH
  Application Name:    Flash.exe
  Application Version:    11.0.0.485
  Application Timestamp:    4badda9d
  Fault Module Name:    ntdll.dll
  Fault Module Version:    6.1.7601.18247
  Fault Module Timestamp:    521ea8e7
  Exception Code:    c0150010
  Exception Offset:    0008482b
  OS Version:    6.1.7601.2.1.0.256.1
  Locale ID:    1033
  Additional Information 1:    2865
  Additional Information 2:    2865b1bb537c4d5e61b79207bc968f0a
  Additional Information 3:    2116
  Additional Information 4:    2116da8c99f9527466231198673244ae
PLEASE tell me there's a way to fix this. I've tried everything I can think of and have to get this video done in the next few days!!!! I would love to be able to start using CS5 and ditch the ancient MX on my slaved drive, but I can't get CS5 to work!
Thanks.

Answer 1

3. (Windows) Disable Compatibility Mode. 
     For information on compatibility mode, see Using Windows 7 or Vista compatibility mode. 
Windows Compatibility Mode can cause errors to occur with Adobe Creative Suite products. To disable it, do the following:
Navigate to C:\Program Files\Adobe\[application name]. 
Right-click the product application file and choose Properties.  
In the Compatibility tab, deselect all options under Compatibility Mode, Settings, and Privilege Level.   
Click OK, and relaunch the Adobe Creative Suite 5 product. 
4. Disable startup items and services. 
     Applications running in the background can prevent Creative Suite 5, CS5.5, and CS6 products from launching. For instructions on temporarily disabling these items, see the following documents:
Disable startup items and Services (Windows XP)
Restart Windows in a modified mode (Windows 7 and Windows Vista)
Start the system in Safe Boot mode (Mac OS)
5. Log in using a new local administrative user account. 
     A new local administrative account can rule out network policies, corrupt profiles, and incorrectly setup administrative accounts as the cause of a failed launch. To create a local administrator account, see the following:
Windows XP: Choose Start > Help And Support and see the article "Add a new user to the computer," or contact your system administrator.
Windows Vista/Windows 7: Create new local administrator account (Windows Vista) (kb404912)
Mac OS: Creating and modifying user accounts on the Apple support website. This video demonstrates the procedure to create a Standard user account. To create an Administrator account, select Administrator in the New Accounts menu.
6. Delete all Adobefnt*.lst files 
Search for and delete all copies of the AdobeFnt*.lst file that you find on the hard disk: 
(Mac OS) In the Finder, choose File > Find (Command + F).
(Windows XP) In Explorer, click the Search button (Ctrl+F).
(Windows Vista/7) In Explorer, use the search box in the upper right (Ctrl+F).
Type Adobefnt*.lst and then click the Search icon. If you have more than one hard drive, only search the system (OS) drive.
(Windows XP Search Assistant) Choose All Files and Folders. Under More advanced options select Search System Folders, Search hidden files and folders, and Search subfolders.  
Click within the search results. Choose Edit > Select All, and then drag the selected files to the Trash (Mac OS) or Recycle Bin (Windows).  
(Mac OS) Choose Finder > Empty Trash.  
Restart the application. 
If an Adobefnt*.lst file becomes damaged, it can cause the application to crash, freeze, or quit when you try to start it. Adobefnt.lst files (for example, Adobefnt10.list for InDesign) are font cache files that Adobe applications use to quickly gather and store information about available fonts. If you delete or rename an Adobefnt.lst file, the application re-creates it the next time you start the application.  
7. Troubleshoot font issues. 
Remove or disable nonessential fonts and then restart your Creative Suite application. See:
Reduce the number of active fonts (Windows XP)
Reduce the number of active fonts (Windows 7 and Windows Vista)
Troubleshoot fonts (Mac OS)
8. (Windows) Update your video card driver. 
Download the latest driver from your video card manufacturer's website or contact the manufacturer for an updated driver. 
9. Search the knowledgebase for errors. 
Search the Adobe knowledgebase for any errors that appear:
Go to the Adobe Support website and choose your product from the Select Product Support Center menu.  
Type the error into the search field and click Search. 
Note: Omit file paths and registry keys from the search string.
10. Run the Adobe Support Advisor. 
The Adobe Support Advisor is an AIR app that helps identify and resolve installation issues. It can also assist with errors that occur when AMT is running. For more information, see Using the Adobe Support Advisor (kb405816) and Troubleshoot launch errors using Creative Suite launch logs (cpsid_83478).
11. Perform system troubleshooting steps 
Follow the steps in Troubleshoot system errors and freezes | Adobe software on Windows (cpsid_82252) or Troubleshoot system errors and freezes | Adobe software on Mac OS (cpsid_82414).