When adding a shape on an internal layer, the PC Editor crashes without issuing an error or warning.
A work-around for the problem is to set the design precision to “2” or change the Min aperture to .3 mm.
The smallest min aperture allowed is 3 database units or .3 mm in this case.
Cadence R&D is planning to put a check in place to notify the user. In addition, they are also considering a check in Dbdoctor to catch the issue.