This seems to be a well-known problem, although for me it's new. But I think I can say I've never seen a problem that has its own fully dedicated website: http://www.sku011cab.com/
Hope this helps. If it doesn't, google SKU011.CAB for other hits.
MS Office 2003 denied access after an autoupdate. Windows installer keeps popping up and stops due to an Installation File Error: Installation File SKU011.CAB could not be found. This is a legitimate MS Office program, but was pre-loaded on the PC, so I don't have a cd (do have install key). Any suggestions?