# "Integrity check" error

**URL:** <https://resource.dopus.com/t/integrity-check-error/13455>\
**Category:** Help & Support\
**Created:** [July 4, 2012, 5:40pm UTC](https://resource.dopus.com/t/integrity-check-error/13455 "2012-07-04T17:40:46Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![Leo](https://resource.dopus.com/user_avatar/resource.dopus.com/leo/32/69732_2.png) [@Leo](https://resource.dopus.com/u/Leo)\
**Post date:** [July 4, 2012, 6:19pm UTC](https://resource.dopus.com/t/integrity-check-error/13455/2 "2012-07-04T18:19:24Z")

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Please check that the installer (if you still have it) and the program's EXE and DLL files are undamaged by verifying their digital signatures:

> [@How to check for a corrupted installer or main program](https://resource.dopus.com/t/how-to-check-for-a-corrupted-installer-or-main-program/8660/1):
>
> Digital signatures The Directory Opus installer, as well as components of Directory Opus itself, are digitally signed by GPSoftware. Digital signatures allow you to verify that the files you have downloaded or installed are intact and unmodified. T…

If those all look fine, could you send your evaluation certificate to me either via a private message here or via email to [leo@gpsoft.com.au](mailto:leo@gpsoft.com.au)? I'll see if there's anything wrong with the certificate itself.

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_[View the full topic](https://resource.dopus.com/t/integrity-check-error/13455)._