# Dynamo for Revit 2021 **URL:** \ **Category:** Revit\ **Created:** [May 4, 2021, 12:30pm UTC](https://forum.dynamobim.com/t/dynamo-for-revit-2021/63574 "2021-05-04T12:30:18Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![Christine](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/christine/32/116094_2.png) [@Christine](https://forum.dynamobim.com/u/Christine)\ **Post date:** [May 4, 2021, 12:30pm UTC](https://forum.dynamobim.com/t/dynamo-for-revit-2021/63574/1 "2021-05-04T12:30:18Z")
New here. Dynamo version 2.6.1.8850 in Revit 2021 won’t work all of the sudden. It works for my co-worker, same version, same file path locations, nodes, etc. My graph takes forever to open and then looks like this: ![image](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/9/8/98058cfd81e12fe7a58e658b415a1a0bb05f8cd2.png) Any idea what is wrong? Thanks. ---
**Author:** ![Christine](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/christine/32/116094_2.png) [@Christine](https://forum.dynamobim.com/u/Christine)\ **Post date:** [May 4, 2021, 4:42pm UTC](https://forum.dynamobim.com/t/dynamo-for-revit-2021/63574/2 "2021-05-04T16:42:45Z")
I finally realized that Dynamo just won’t work at all in Revit 2021. It wasn’t just that particular file. ---
**Author:** ![jacob.small](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/jacob.small/32/161030_2.png) [@jacob.small](https://forum.dynamobim.com/u/jacob.small)\ **Post date:** [May 4, 2021, 5:00pm UTC](https://forum.dynamobim.com/t/dynamo-for-revit-2021/63574/3 "2021-05-04T17:00:50Z")
It’s almost certainly likely a conflicting add-in. Check to see if there are notes about the conflicts in your Dynamo console (Shift + up arrow in dynamo), Dynamo Log, or Revit Journal files (search for API error). Alternatively you can disable ALL add-ins and see if that solves the issue. if so add them back in groups until you find the offending tool. ---
**Author:** ![Christine](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/christine/32/116094_2.png) [@Christine](https://forum.dynamobim.com/u/Christine)\ **Post date:** [May 4, 2021, 5:28pm UTC](https://forum.dynamobim.com/t/dynamo-for-revit-2021/63574/4 "2021-05-04T17:28:41Z")
Thanks so much. I will check out the add-ins. ---
**Author:** ![Christine](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/christine/32/116094_2.png) [@Christine](https://forum.dynamobim.com/u/Christine)\ **Post date:** [May 5, 2021, 10:46am UTC](https://forum.dynamobim.com/t/dynamo-for-revit-2021/63574/5 "2021-05-05T10:46:50Z")
The only conflict I had was with Rhythm, but I found the following post regarding the same issue I had: > [@Issue with Rhythm package 2020.9.8.0?](https://forum.dynamobim.com/t/issue-with-rhythm-package-2020-9-8-0/55401): > > Ive disabled all addins for 2021 including “adsk” deployment addins. Getting this error. Not sure if its something on my end? “While loading assembly RhythmRevit, Version=2020.9.8.0, Culture=neutral, PublicKeyToken=null, Dynamo detected that the dependency AdWindows, Version=2018.11.1.0, Culture=neutral, PublicKeyToken=null was already loaded with an incompatiable version. It is likely that another Revit Addin has loaded this assembly, please try uninstalling other Addins, and starting Dynamo… All packages were re-downloaded and that resolved the issue, which is what I believe you meant by add-ins. Thanks so much! ---
**Author:** ![simon\_murphy1](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/simon_murphy1/32/101536_2.png) [@simon\_murphy1](https://forum.dynamobim.com/u/simon_murphy1)\ **Post date:** [May 5, 2021, 11:13am UTC](https://forum.dynamobim.com/t/dynamo-for-revit-2021/63574/6 "2021-05-05T11:13:33Z")
I thought by add-ins he was referring to stuff like Enscape and Lightstanza that are extensions inside Revit. These add-ins create their own buttons on the Revit toolbars. Sometimes these Revit additional tools cause problems for Dynamo which was itself an external add-in for Revit, but is now much more integrated into Revit. ---
**Author:** ![Christine](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/christine/32/116094_2.png) [@Christine](https://forum.dynamobim.com/u/Christine)\ **Post date:** [May 5, 2021, 11:30am UTC](https://forum.dynamobim.com/t/dynamo-for-revit-2021/63574/7 "2021-05-05T11:30:38Z")
Okay, I thought that’s what he was referring to at first, but then thought I misunderstood and that he meant packages. I only have a couple add-ins, and that’s never been a conflict with Dynamo. Thanks for explaining. ---
**Author:** ![jacob.small](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/jacob.small/32/161030_2.png) [@jacob.small](https://forum.dynamobim.com/u/jacob.small)\ **Post date:** [May 5, 2021, 1:56pm UTC](https://forum.dynamobim.com/t/dynamo-for-revit-2021/63574/8 "2021-05-05T13:56:00Z")
I was referring to the Revit add-ins. That is usually an easier test than the packages issue, so I like to start there. Glad you are worked out though. 🙂 ---
**Author:** ![Christine](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/christine/32/116094_2.png) [@Christine](https://forum.dynamobim.com/u/Christine)\ **Post date:** [May 5, 2021, 2:15pm UTC](https://forum.dynamobim.com/t/dynamo-for-revit-2021/63574/9 "2021-05-05T14:15:39Z")
I very much appreciate the help!