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Error when upgrading to 4.21

Hello! In the end (Running assembly installer for /bin/episerver.dll) of the upgrade process using EPiServerInstaller.exe I get the following error message: The installation failed, and the rollback has been performed. [The configuration registry key is invalid] // Stefan
Oct 20, 2003 17:12
Hi, I recently had the same problem upgrading a 4.50 installation to 4.51. I managed to solve it (after some help) by removing the HKLM/System/CurrentControlSet/Services/EPiServer4/Performance collection of keys. This seemed to allow me to upgrade. Obviously before removing these keys from the registry, make a backup of them in case the same fix does not apply. Rich M
May 03, 2006 10:12
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