I updated to DS 2017 last week, seemingly without issue.

Today I was working with my title block and received the below message when double clicking on an attribute:

: _EDITXBLOCKATTRIBUTE

Unrecognized command EDITXBLOCKATTRIBUTE. Press F1 for help.

I've tried other blocks which were stored in other files, all of which functioned previously; none of them work, and all return the same error.

Opening/closing the program doesn't help, nor does shutdown & restart of the PC.

Anyone have a suggestion?

Edit to add system information:

Draftsight 2017 x64 SPO installed over the old 2016 installation

Dell Precision M2800 running windows 7 pro

Intel i7-4610M

8GB Ram

FirePro W4170M (FireGL V)