Unable to open a document since installing studio on a new PC

Hi, since getting a new PC i’ve been unable to open any UiPath projects. UiPath Studio is installed and I can create/run new projects but any of my previous ones do not work anymore.
I get an error ‘…Main.xaml’ could not be opened: Document is invalid.
I’ve made sure my packages are upto date & i;ve cleared the nuget cache but still getting this error.
Can anybody help please?

@Martin_Bud

Welcome to the community

how did you update the packages if you are unable to open?

also on what version are they created? and what version you are currently on?

cheers