When selecting a Windows image in WSIM, WSIM hangs. I tried to close the program and select a windows image again, but got the following error:

Windows SIM was unable to generate a catalog. For troubleshooting assistance, see the topic: ‘Windows System Image Manager Technical Reference’ in the Windows OPK or Windows AIK User’s Guide.

I was trying to use a x86 version of Windows 7 and had copied install.wim to a folder on my computer called images. My computer was running x64. When using WSIM I was only able to import an image with the same architecture as my technician computer.

To solve this issue, I had to import the image directly from the DVD using the .clg file instead of using the install.wim file that I had copied to my images folder.