Can't change Standard part properties

Hi all
i've searched in the forum and on internet but haven't found anything

I'm using Bricscad Mechanical ultimate in both V21 and V22
starting from yesterday i've found that if i insert a standard part in the model i can't change any of the properties of the part: the part is being inserted with it's default measures/properties, but any attempt to change them brings nothing
The values in the Mechanical Browser or Properties panel are being changed, but nothing happen in the model
Even in new models i can't obtain to change the properties

Recently i've installed express tools in both V21 and V22, but even uninstalling them haven't bring any advantage

Previous, when i inserted a hole, it was editable and if i did delete it, the hole was removed from the solid: now if i delete the hole std part, the solid still remain pierced, like if the hole was finalized immediately in the solid


Did you have any suggestion? i don't want to reinstall them
Thanks
P.