Error when opening file

[CJ_2803694]

I am using Mathcad Release 15.0 and DatecodeN/A

Error opening files

Here are the errors that I faced
An unrecoverable engine error was encountered end_exception

[BenLoosli]

Is the file from a newer version of MathCAD Prime?

MathCAD 15 cannot open file from MathCAD Prime.

[LucMeekes]

The Mathcad reaction to a Prime file is "Failed to open document".

Potentially your Mathcad file is corrupt.

Please attach the file, so we may be able to help you. [In case this forum doesn't accept it, enclose it in .ZIP archive.]

Success!

Luc