Listers: Using O$6.1.2 (64 bit) on Windows Server 2012 (testing on server) and trying to open xxx.pdf files with: Register DLL ("SHELL32.DLL","ShellExecuteA","JJCCCCJ") Call DLL ("SHELL32.DLL","ShellExecuteA",0,"open",iFileName,"","",1) Returns iResult This doesn’t work. Is there a replacement method that works? Ben Weinberg