PyRevit not loading after installing last verison

[osdj-a]

Describe the bug
Currently installed the latest version of PyRevit not i get "PyRevitLoader - Error Loading pyRevit" error in Revit 2022.
I´ve tried pyrevit attach master 277 --installed. Also uninstalling etc.

To Reproduce
Steps to reproduce the behavior:

1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

Expected behavior
To run

Screenshots

Desktop (please complete the following information):

• OS: Windows 10
• pyRevit Version [ 4.8.12
• pyRevit Environment: Open a command prompt and run the command below. Replace these lines with the results. Take a look at this markdown guide and wrap the command results in ``` when pasting here for correct formatting.

Additional context
Version before worked like a charm.

[jmcouffin]

Hi @osdj-a , Can you please check it it works with

pyrevit attach master 2710 --installed --allusers
It might have to do with the ironpython engine

If it still does not work, I would check these two articles:

1. https://www.notion.so/pyRevit-Is-Installed-But-Does-Not-Load-f6495adb56254e9e8021f8a68e3b2ab7 (probably not related)
2. https://www.notion.so/Can-Not-Uninstall-pyRevit-or-pyRevit-CLI-24978bb1aa3f4e419f61272bd1b19ffb

if nothing else works:

• Uninstall pyRevit and pyRevit CLI (if installed)
• delete or move every folder like %appdata%/pyrevit and %appdata%/pyrevit-master and c:/programdata/pyrevit
• restart
• re-install the latest release

[osdj-a]

Hi @osdj-a , Can you please check it it works with

pyrevit attach master 2710 --installed --allusers It might have to do with the ironpython engine

If it still does not work, I would check these two articles:

1. https://www.notion.so/pyRevit-Is-Installed-But-Does-Not-Load-f6495adb56254e9e8021f8a68e3b2ab7 (probably not related)
2. https://www.notion.so/Can-Not-Uninstall-pyRevit-or-pyRevit-CLI-24978bb1aa3f4e419f61272bd1b19ffb

if nothing else works:

• Uninstall pyRevit and pyRevit CLI (if installed)
• delete or move every folder like %appdata%/pyrevit and %appdata%/pyrevit-master and c:/programdata/pyrevit
• restart
• re-install the latest release

Tried all of them but still have the same error

[jmcouffin]

@osdj-a
Other possible solution (less probable), might be due to a dll interaction
try this: #1612 (comment)

[osdj-a]

Tried but still, error. Are there anyway to completely wipe off pyRevit and retry an clean install?

[jmcouffin]

• Uninstall pyRevit and pyRevit CLI (if installed)
• delete or move every folder like %appdata%/pyrevit and %appdata%/pyrevit-master and c:/programdata/pyrevit
• restart
• re-install the latest release

@osdj-a
besides what I mentioned earlier #1614 (comment), there is the pyrevit doctor command to tries to reset registry keys.

The install is not so intrusive. The unistall process (hte regular one) usually does the job and leaves in %appdata% the pyrevit-master and pyrevit folders that you can just delete.
you could use an external tool to uninstall it as well, I used iobit uninstaller in the past with success in the past https://www.iobit.com/en/advanceduninstaller.php

[jmcouffin]

There is a list of related issues on github and on the pyRevit forum but they tend to have different reasons. The most seen being dll incompatibility between a revit addin and pyrevit

[GiovannaGGS]

Hello I have the Revit 2021.1.4 and the pyrevit it doesn't work with this version. What could I do?

Thank you

[osdj-a]

There are a lit of related issues on github and on the pyRevit forum but they tend to have different reasons. The most seen being dll incompatibility between a revit addin and pyrevit

Nothing really seems to work.
I know Ive had this problem before, I believe it had something to do with Python 2&3 / IronPython but cant really remmember.

[osdj-a]

Apperently I had an internal company add-in for Revit which had an older version of Python that loaded in before pyRevit. Worked by disable it.