The following extensions of mine have been updated for compatibility with v2024 Ruby - the deprecated Fixnum has been removed.
https://sketchucation.com/pluginstore?pln=ExtrudeTools - v6.0
https://sketchucation.com/pluginstore?pln=Latticeizer - v1.9
https://sketchucation.com/pluginstore?pln=Roof - v6.0
https://sketchucation.com/pluginstore?pln=SKMtools - v20240425
https://sketchucation.com/pluginstore?pln=TIG_Smart_offset - v4.0

v5.0 of PurgeAll is available - it fixes some minor glitches with v2024 changes...
https://sketchucation.com/pluginstore?pln=PurgeAll

@sashapepperspray
The method File.exists? has long been deprecated, but worked.
In the latest Ruby version it doesn’t - File.exist? - works in v2024 and older versions as well.
Many developers are working to adjust their code accordingly.

Have patience and post any instances in an affected extension's thread - as there are 100s of 1000s of line of code with the tiniest corrections needing to be found and change, then the extension re-encrypted and signed…

Many authors have already fixed their extensions, so look regularly to see if there’s already an update available…

@Joel3dm
Yes.
Make the non-auto-updating SectionCutFace unLocked and choose a material/color that's already used in the model [from a list].
A SCF's material applies to all faces, but you can edit the group and apply any material to any face etc...

@Gábor
The issue is more widespread than this.
If you have a v2023 file and attempt to load a SKP component that's v2024 it will fail 'silently'.
Also trying to open a v2024 SKP from within v2023 also fails the same way.
If you manually open a v2024 using v2023 an message pops up about it being from a newer version, but you can skip and continue...

So any code which takes an exported v2023 component, manipulates it via the C SDK and returns it as a v2024 file is doomed to fail as explained above...

Perhaps the only way is to spot the version of the 'parent' SKP and its exported component, and use a suitable C SDK file to process it back into the compatible v2024 format ?

For backwards compatibility it'll need to cover v2023, v2022, v2021 and v2020 files because the 'versionless' v2024 format breaks those [perhaps using v2020 format for all exports would work in all newer versions ?] - more testing with any upcoming v2025 might reveal further issues...

AI forgot the doors !
Otherwise it's pretty good...

The SKP you provided has 2 roof faces at z>0 [faces at z0 don't work].
These 2 are identical in edge sizes and orientations/direction.
The one on the right takes a hipped roof OK, but the one on the left fails with an error message.
This is weird.
However, if you follow the advice in the error message on that problem face. and erase one edge and remake t the new face will also take a hipped roof OK.
Something in your model's database is skewed.
But it is fixable...

@Rich-O-Brien

Liam, get as well as you can soon...

Reminded me of this dickwad

Thomas Midgley Jr. has been named a “one-man environmental disaster” for two big reasons. He was one of the early pioneers of chlorofluorocarbons (CFCs) – compounds that became widely used in industry – and which were destroying the ozone layer. He also invented leaded gasoline and insisted that it was safe to use.

Perhaps there is a god, because after that he got polio and was partially paralyzed, he invented a pulley contraction on his bed to move him, but one day he became entangled in it and was strangled !

@unknownuser said:

I can't validate the round corner license, in the extension box the error says communication failed with sketchucation

See the previous reply about why this might happen...
And how to fix it...

@HornOxx

I use AutoHotkey for many things and it's easy enough to customize once you come to grips with its foibles...
I don't auto-resize viewports, but Rich knows how, and perhaps he can share his example script, or point you/us to someone else's ?

@miguelbarbosa5
A clearer explanation would help us to help you !

The LibFredo6_all_defaults.dat can have incorrect permissions if SketchUp was installed incorrectly [i.e. not using 'Run as administrator']
Although running it again 'as administrator' and choosing 'Repair' should fix most permission issues, some remain - especially with extensions saved files/folders.
Deleting the the LibFredo6_all_defaults.dat while SketchUp is closed should work as SketchUp will recreate it with the correct permissions when it next runs.

I suspect the unexpected user name ending ~1 is because your umlaut containing name is there under the surface.
Renaming it FJS doesn't change it's underlying name ?
Can your tech guy help sort out your user-account name, without any accented characters etc [as prohibited by Microsoft, but Windows lets them slip through]

Have you tried downloading the installer exe again from SketchUp or your local supplier ?
There are two versions one is a larger file containing everything needed, the other downloads some components from the web...
The larger one is the safer option...

Depending where it fails there might still be a MSI file extracted with all of the needed files, even if the full installation stalled.
If you find that you can try running it...
e.g. C:\Users\YOURUSERNAME\AppDataLocal\Downloaded Installations\SketchUp 2024\SketchUp\SketchUp 2024.msi
Try the FJS and perhaps the FJSCHS~1 user-name...

So we have a solution??

The remaining v2024 issue seems different ?
I am not familiar with errors and messages in German...
Perhaps a full re-installation of v2024 would help ?
With the subsequent json file 'fix' ??

The file: C:\Users\YOURNAME\AppData\Local\SketchUp\SketchUp 20nn\SketchUp\PrivatePreferences.json
Contains the fixed path to your Templates folder, under:
"File Locations": {
...
"Templates": "C:\\Users\\YOURNAME\\AppData\\Roaming\\SketchUp\\SketchUp 20nn\\SketchUp\\Templates\\",
...
}
Note you need to use the correct user-name and SketchUp version in lieu of 20nn.
If you edit that with the right name while SketchUp is closed does that improve things ??
Changing a user-name does not change the underlying original user-name, and if that's happened it could confuse SketchUp when it's setting these fixed paths...
If that's not fixed SketchUp might still try to reset this preferences file to what it thinks is the correct path !

Being 'unsigned' need not be a problem.

Edit your native Extension Manager settings - Loading Policy > Unrestricted

Restart SketchUp and version-compatible, but 'unsigned', extensions [i.e. usually older] will then load OK.
Only install extensions from trustworthy sources - like SketchUcation, the Extension-Warehouse and a few developers' sites which offer direct downloads...

I didn't actually tell you to delete the whole directory !
Just the dat file.
But probably no harm done

You don't need to reinstall SketchUp.
Just Repair it.
Close SketchUp.
Right-click on the SketchUp installer's exe file's icon [in Downloads] > Run as administrator... choose Repair.
Do not 'run' SketchUp as administrator, it can cause permission issues.
Your normal user-account might have some 'admin-powers' but that's not the same thing...
Do not Run the installer by double-clicking it - that can cause unpredictable permissions issues.
As far as the:
C:/Users/greg_/AppData/Local/LIBFREDO6_DATA_Dir/LibFredo6_all_defaults.dat
issue is concerned, I'd delete that dat file [or move it out of the way in case of a mess-up in the next step, so you can back-step to where you were].
Alternatively right-click on the dat file's icon and use Security > Permissions > Edit to give FULL control to everything that is listed...
When SketchUp restarts it should be remade with default settings and permissions...

@DIPINACHARI

You are doing it already !
Write a clear message outlining your issue[s] and someone will reply.
At weekends and holidays replies might not be instant.
In more difficult circumstances you can communicate by Private Message [Chat] - but you need a few posts before you are allowed to do that - or email with SketchUcation's support team...

How did you rename the user-account ?
Can you revert it back and make a new account 'FJS' and transfer all of your settings over to the new account ?
There's lots on line about that...
e.g.
https://learn.microsoft.com/en-us/answers/questions/914152/link-the-new-user-profile-to-existing-user-profile