Paul: Thank you. I use PC Fix 2.0.4 (
https://www.pc-fix-2010.com/en-uk/contact-us.html). I confess I dont know anything about Registry cleaners.
After Visio was uninstalled, the registry was cleaned, when reinstalled and used twice, PC Fix reported about 33 empty registry keys and 8 issues with ActiveX/OLE. Is PC Fix the appropriate cleaner?
I'll come on to the effect of re-installation below. First in response to your question: I dont use Visual Studio.
I installed the Visio Premium 2010 from the purchased MS disc onto a Netbook (XP SP3). Visio worked straight off - taking shapes from a stencil to save a drawing without loss or delay. So that probably exonerates the source disc.
I follwed up your advice re File>Advanced>File Locations: I was surprised to see the the File locations entries were the same for Visio on Dell and Netbook: ONLY MyShapes had a correct file path, to the customised MyShapes folder in My Documents. But all other filepaths were empty (Drawings, Templates, Stencils, Help, Add-ons; Start-up).
That was surprising because a default MS Visio Stencil appeared the the left of the drawing canvass on the NETBOOK, but nothing appeared on the DELL. I dont have the knowledge to understand this.
I opened a drawing canvas in each PC, on each I drew a rectangle from the fluent Toolbar>Tools button, and saved and closed the resultant file. When I clicked to open each file, the file in the notebook opened instantly; the file in the DELL opened after a long 25 seconds.
Progress has been made - the Dell can now SAVE a drawing, before it could only save as (before is totally stopped working today).
your advice has started me to engage better with the problem, but I'm still in difficulties with my Visio Premium.
RSut