You are unable to convert a file which is on a LAN Crypt encrypted drive to PDF. This is seen when SafeGuard LAN Crypt and Adobe Acrobat Express version 7.0 are installed on the same PC.
SafeGuard LAN Crypt Client version 126.96.36.199
Windows XP SP2 Professional Edition
What to do
To solve this issue, please install "Patch 4 (188.8.131.52)" for SafeGuard LAN Crypt 3.51.x.