Conflict when running two versions

[Anonymous]

This is a General Revit question, but there is no forum for that. As a Landscape Architect I am constrained to matching the architect's version - which means that I have multiple versions active. [Leaving aside the need to flog people who upgrade models, and the constraints on continuously generating content in the lowest current version], It appears that some versions hang upon startup after I have used other versions, i.e. 2019 will not start, after I have used 2018.  logging out and restarting both appear to resolve the issue, and I am going to begin testing using process explorer to stop any associated processes, but I was hoping there was some experience with this issue.

[RobDraw]

No need for griping, we are all in the same boat.

I have not seen the behavior that you are describing. Are all versions fully updated?

[!Dalton_Goodwin!]

Does this issue happen to any Revit version? Is there specific Revit versions? Does it only happen if 2018 was opened first and vice versa?  

I haven't seen that issue before. I have kind of seen that with Dynamo. 

I agree, make sure you have the latest updates.

[Anonymous]

Run multiple versions regularly....2015 - 2020...no issues. Yes...we have active projects in 2015.

If there are issues it may be the Revit versions were not installed sequentially.

[Anonymous]

Okay. I've tested various combos, and it seems to be when 2019 is started after 2018.
I am current on both versions., but my recollection was 2019 was installed before 2018
Maybe when I have some free time I can remove 2019 and reinstall, and then they will play together.
Thanks for all the input.