Distiller Error: invalidfileaccess

Hi there,

maybe s.o. can help me..

Since I've updated acrobat Pro XI  I can't create pdf files out of autocad  anymore...I'm  getting the following error:

%%[ ProductName: Distiller ]%%

%%[ Error: invalidfileaccess; OffendingCommand: imageDistiller ]%%

Stack:

-file-

%%[ Flushing: rest of job (to end-of-file) will be ignored ]%%

%%[ Warning: PostScript error. No PDF file produced. ] %%

"Google"  is saying  to try  adding     -F    after des the destillers  .exe  destination  to  avoid safemode or similiar   ??

like  this  

"C:\Program Files (x86)\Adobe\Acrobat 11.0\Acrobat\acrodist.exe" -F

But this  didn't work out

Can somebody help me out here?

Thanks in advance   :-)

martin

My system  is  windows 7  pro