I have now uninstalled every WA extension, and reinstalled:
CSS Form Builder
Deleted the .dat file.
Opened DW, and the file I was working on.
Went to WebAssist > Forms > Validation > Server Validation
Prompted for Form Toolkit serial.
Enter correct serial.
Unexpected error: 14
Activation cannot be completed, and to post here....
Same error with Security Assist.
I was able to Activate Form Builder though.
Having activated Form Builder, I still get the error with Security Assist, but am not even able to enter the serial for Form Toolkit now.