Please try to check the downloaded ISO file with .MD5 sum file that you can find in the same page where you download the ISO file.

Also you can try to try the latest build to be installed on a fresh new USB flash memory and test it if it work fine with you or do you face issues.

If It works fine, then go to your old build system, try to clear older builds if exist, so leave only one build available, and then update.

You can find the latest builds at our website at:
http://www.open-e.com/account/products-and-updates/

Also you can find the instructions how to update in the same page if you need them.
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Alaa Souqi