Flash player 10 installation error!

The other day I was checking out Flex and my browser prompted me for a Flash plugin update. The new version was 10.

Tried to go through the update and got the error:

Error: "You do not have sufficient disk space to complete this installation" when installing Flash Player 10 on Windows

Odd, plenty of space in my disk I thought and searched for a solution.

Apparently if your system drive (the one Windows are installed) is not labeled C then this is the cause. There is a technote for this at http://www.adobe.com/go/kb406903

However I found their solution unacceptable for my case since I did not have a removable drive at the time :-)

So here is an alternative:

1. Get 7zip and install it.
2. Download the flash update.
3. Open the FlashPlayerUpdate.exe as an archive using 7zip.
4. Extract the files NPSWF32.dll and NPSWF32_FlashUtil.exe
5. Close all browser windows.
   
6. Go to SYSTEM_DRIVE:\Program Files\Mozilla Firefox\plugins and rename the old files named as above to NPSWF32.dll.old and NPSWF32_FlashUtil.exe.old.
7. Copy the extracted files from step 4 to SYSTEM_DRIVE:\Program Files\Mozilla Firefox\plugins
8. Start firefox and go to http://www.adobe.com/go/tn_15507 to verify.
9. Repeat for other browsers.

I believe that you must run the installation once and let it fail before trying this. I am pretty sure that this is the procedure I followed before getting it to work, but I may not remember correctly. Let me know if that's the case.