Hi Iryna,
While I understand that this is not the easiest way, you may try the following:
a) ExcelCompare.tcx script extension is a Zip archive, so unpack it into some folder;
b) Change extension of the extracted file from .js to .sj;
c) If your test project uses JScript, just add extracted file to the project. If not, you will have to create a new JScript-based project, add extracted file to it and add a new script unit with the problematic test code converted to JScript;
d) Replace in your test code call to the script extension with the call to the relevant method from the extracted file;
e) Put a breakpoint in the extracted file near the crash point and start test execution. Debug extension's code in TestComplete. Hope you'll find the reason of the crash and let us and SmartBear's Support know.
P.S. BTW, exception code 5 is Access Denied one. Depending on where the crash error occurs, might it be that the file is either read-only, or located on the read-only resource, or some other similair problem exists?
