Part of your issue is deriving from the Newblue line of Plugins you have installed. You were advised in another post about them, but you still have it on your system.... So i will suggest uninstall and remove every single Newblue plugins and its folders from your computer, empty your recycle bin, and restart your system. Then see if you notice any difference.

@Steve_Rhoden It was exhausting to track down and delete all the NewBlue files, including hidden ones scattered everywhere. It took me about an hour to finally remove everything. I feel like Vegas is running faster and performing better without the NBFX plugins. I think they're not compatible with Vegas and cause too many issues and crashes.. I will keep monitoring things though.

Unless you've already done this, consider running a registry cleaner such as the free CCleaner (the registry cleaner is listed under the Tools menu) which should remove any remnants of uninstalled programs from the registry.

@Dexcon Thank you, i will download the CCleaner now and check things up.

the project im working on wont open at all, whenever i start it , it gives this error and shuts down

Probably because you removed the NBFX plugins (and used them before in your project) you get this error message. If new projects open without issues, than forget this project. I also recommend to disable in preferences this setting, to avoid that Vegas hangs during startup when trying to open a corrupt project.

It was exhausting to track down and delete all the NewBlue files, including hidden ones scattered everywhere. It took me about an hour to finally remove everything. I feel like Vegas is running faster and performing better without the NBFX plugins. I think they're not compatible with Vegas and cause too many issues and crashes.. I will keep monitoring things though.

First of all, NewBlue plugins wouldn't be "scattered everywhere". To remove all NewBlue plugins from VEGAS, it's best to uninstall but you can just go to:

c:\Program Files\Common Files\OFX\Plugins and simply remove the "NewBlueFX" folder (and/or "NewBlue" folder)

Then, when restarting VEGAS, make sure you clear the cache!

Yes, NewBlue plugins are compatible with VEGAS. I have TotalFX installed (which is every effect, every transition, and Titler Pro) and VEGAS is working fine!

@jetdv I found them scattered everywhere because I still had folders from previous Vegas versions (18, 19, 20, and 21) that I hadn’t deleted. They were spread across different folders in Vegas, so I had to remove them manually. Although they were compatible, they caused frequent crashes, especially with "Titler Pro." Just clicking on it in Vegas effects made the software lag and go into "Not responding" mode.

@Nizar-AbuZayyad, VEGAS Pro 18, 19, 20, and 21 may have been over various folders but the NewBlue plugins should be where I stated (with base files also placed in c:\Program Files\NewBlueFX.) If you remove the files from c:\Program Files\Common Files\OFX\Plugins then VEGAS won't see the plugins - period - for current OFX plugins.

Now, if you had really old DirectX plugins installed, that could be a different story.

I'm sure the "compatibility" issues you are referring to would have been caused by Titler Pro and not the other effects/transitions. However, even with Titler Pro, the vast majority of people are using it with minor to no issues. If you have issues with Titler Pro, please do contact NewBlue support so those issues can also be found and fixed. Many times, it's just a video driver issue. Sometimes, other things can happen.