Pinnacle 21 Community 4.1.0 ADAM Define Excel Specification using ADAMIG 1.2

We are getting an error while generating ADAM Define Excel specification from ADAM XPT files using ADAMIG - 1.2

Is the xpt file intact?
This symptom may occur if the xpt file is corrupted.

XPT files are not corrupted. Please let me know how to resolve this error.