Super Contributor.
Super Contributor.

LR Support Tips : Downgrade to 11.0x from 11.5x causes Controller to Crash

Customers that use LoadRunner 11.5x and require to downgrade to version 11.0x (for any reason, such as using older licenses) need to know that there is an issue when opening Scenarios in Controller after the installation. Please refer to this article (https://softwaresupport.hp.com/group/softwaresupport/search-result/-/facetsearch/document/KM00693805) for the required change in order to stop the Controller from crashing. I summary, uninstalling the 11.5x Software is not enough. Entries in registry must be removed. A specific entry must be modified in order to be able to open scenarios in Controller.
HP Support

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