Problem installing DimPro expansion packs. Ignore this I did not see the other thread.

Downloaded the DimPro/Rapture package last week and have now downloaded the free expansion packs, however, when I try installing the DimPro ones I get a message saying that I dont have a valid serial number - which I do infact have.  Anybody else had this problem or know how to fix it?

I did not see the other thread that had allready been started so just ignore this one.