Error 1721

Hello to all,

during the process to update from the last  V1R4 to the new V1R5, something has gone terribly wrong. 

I got Error 1721 during the install and the process stopped due to tihs, seems to me error related ti failed uninstall of the V1R4.

But now when i try to start DraftSight i get this

So at the moment i have no version working.

Someone coul help me please?