Access violation when updating PDF creator

I had my first installation of PDF Creator about seven days ago and I got an error same as today. Today I wanted to install its latest update since the one I had installed was not the latest one.
Everything went well, initializing, extracting files and etc. Now the problem is that when I am about to click the FINISH button, the errors below occurred. Last time, I just used the task manager to fix it. But I wonder why it happened again today. If I’m going to use the task manager again, I’m afraid the same error will occur next time.
Please help me.
“Error Message: Runtime Error (at 110:383) Access Violation at Address 7C928COB Read of address 41504D4F.”
