In some cases M$ Windows will change the dates of files during an install. The result can be that when a subsequent install is done, the dictionary files appear to be newer than they are, and they are not overwritten as they should be.

The tricky part is that the problem does not occur after the first install where dates were changed, but only when a later upgrade or service pack is installed.

To find the problem at a client's site, I compared dictionary files from my own site to those at the client's site, in Softrak\dict , \Qrasp and \Softrak\System\Qrasp.