I was installing Microsoft Office 2007 on a computer, and part way through the install, I get:

Error 1311. File not found d:sku011.cab

Hmmm… I haven’t had this problem installing office before…

A quick search finds the usual, useless, help from microsoft. But I eventually find the cause:

Since the PC already has Office 2003 installed, Office 2007 decides to automatically upgrade the previous version of Office.

So, it wants “proof” that Office 2003 is installed (don’t ask… its Microsoft logic… even Microsoft don’t understand it 🙂 ). So it looks for a file that it knows must exists on the original Office 2003 install disks. ie sku011.cab

So where does it look for the file?

Why from its original installation location (drive D)… But drive D: has the office 2007 CD in it… so sku011.cab isn’t found…

The solution?

When you get the error message, just put the original office 2003 CD in the drive, and the installation will continue.

I thought Office 2007 had “evolved” (as microsoft had heavily advertised)… Obviously not evolved enough to popup a message to say: “please insert the original Office 2003 CD, and press OK to continue”.