SCN 5059 already attempted to resolve this issue but a source code cut and paste error meant the fix was not actually implemented and the fix actually was potentially corrupting some memory.

The code was using BuildPart1.BPressID rather than BuildPart.BPressID to enable the press. BuildPart1.BPressID could have been any one of 255 possible values rather than for the actual press that neede to be enabled.