Hi SharkDev,
Have you run PSconfig after installing Service Pack 1?
There are several reasons for this issue, please refer to
https://blog.stefan-gossner.com/2013/11/20/common-error-message-the-expected-version-of-the-product-was-not-found-on-the-system/.
Here are some measures for us to detect such issues:
Check the list of installed service packs in Control Panel.
Go to the Central admin site and check the patch status using the “Manage Patch Status” page.
This “SharePoint 2013 - Setup, Upgrade, Administration and Operations” Forum will be migrating to a new home on Microsoft
Q&A, please refer to this sticky
post for more details.
Best regards,
Julie
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