According to Boincs FAQ service
"Code 193 is a segmentation violation error.
You either have problems with your memory or swap file, or the application attempts to access a memory location that it is not allowed to access, or attempts to access a memory location in a way that is not allowed (for example, attempting to write to a read-only location, or to overwrite part of the operating system).
Use a memory checking program like memtest86+ to rigorously test your memory.
And always when you have this error, report it on the forums of the application it happens with. It may well be an error in the application's code. "
Make sure you're leaving enough free memory in the Boinc Manager's settings too I would say.