PGP Engine Quits

I cannot figure out why PGP Engine seems to quit about 50% of the time when encrypting a file via the services menu. The encryption desktop icon from the menu bar disappears as well. It relaunches when I select the encrypt service once again, typically works for one file, and then quits withe the next file. Problem occurred with MacOSX 10.8.x and continues with 10.9.2. Currently running Symantec Encryption Desktop 10.3.2.