On my computer running Windows 7 RC1 32-bit, explorer works fine. On .jpg, .wmv, .avi, ect when I have the icons (whatever size) option picked, the green progress bar will go across the top while it is getting a picture for the new files, but then the pictures show up just fine and the green bar goes away.
On a friend's computer, the exact same files in a directory (not one that has special permissions - just a plain old directory on the second hard drive) will not show thumbnail pictures in Windows 7 RC1 32-bit. The green progress bar at the top will never stop running (after 65 min for a directory with 4 .jpg files I hit the X at the end of the progress bar to stop it) and will only show a generic picture of a lake for .jpg files and a generic picture of something in the sky for .wmv, .avi, .mpg files or just a blank square.
We googled it and some suggested in explorer picking the options menu - folder options - view - and make sure "Always show icons, never thumbnails" was not checked. It wasn't. Neither of us have installed codec packs either.
I even copied a few files into a new test directory on his computer in case it didn't like the thumbs files XP had made in those directories. Still no thumbnails on his computer but when I copied that same directory to my computer, displayed just fine. I even put the View options windows side by side and made sure we had exactly the same options checked. The only one I had he didn't was show hidden files. I went ahead and made his show hidden files to, but no difference. Restore to default button didn't help either.
His is a fairly new install of RC1. When the RC1 came out, he did a dual boot with XP but stopped using RC1 for this same problem. Just a couple weeks ago, he deleted both XP and Win 7 RC1 boot partitions and just installed Windows 7 RC1 32-bit to make it a single boot Windows 7.
After reading this thread I unchecked the index box on all the drives and moved the swap file to a different drive even though there was 120 gig free on the drive it was on. Still no go on the avi or mpg or some wmv files, but the directories that are just .jpg work fine. Tried changing them to default open with VCL, Media Player Classic, and Quicktime. None of them would show a thumbnail and when switched back to Windows Media Player, it didn't either.
When I click on a dirctory with mpg or avi files, that green bar goes across the top and never stops unless you click the Stop Loading "drive or directory name" X, then the everything is back to the way it was till you reboot, even the .jpg files that were thumbnails a second ago.
Any way to not get that green bar at the top? Link Removed due to 404 Error
When the .jpg files are working right, even if it has the default image and it has to load the picture for the thumbs, I don't get that green bar. Once that green bar starts going, everything seems to start messing up. I cant even click on a different drive on the right hand side sometimes until I reboot.