July 20, 200718 yr Hey there. Just wondering why i can't install my pmdg 747-400. When i hit install after a few secs a window pops up and says " a required security module can not be activated. This program can not be excuted "Any hints?Thanks in advance!Claudinho
July 20, 200718 yr Commercial Member If you do a search I believe this has already been covered.. also have a look at the PMDG ops page.. there is a lot of information there.. and I am pretty sure this problem is covered within PMDG OPS..http://ops.precisionmanuals.com/wiki/PMDG_Windows_Vista_FAQThere it is..CheersCraig Craig Read, EGLL
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