Have been using Visio Professional 2013 for six months for .vsdm files.
Suddenly two days ago, Developer mode started turning off when I reopen a .vsdm file.
Tested a small .vsdm file (attached): 1 shape; developer tab ON; NO vba modules.
Open and close vsdm file the first time, developer tab is displayed
Then close file and reopen: developer tab NOT displayed
File properties: it is still a .VSDM file with the write icon and file extension.
Open Options tab ... reset Developer checkbox to 'tick'; tab is displayed.
Save file and close...
Open file once and it usually shows developer tab.
Open again, and tab has gone, File properties: it is still a .VSDM file with the write icon and file extension. etc
Edit the shape colour on the drawing, save, close and reopen --> Developer tab is gone again.
I have a master file which I routinely open and then automatically save as a newly named file. That master file maintains its original status as displaying a developer tab, but the renamed files it produces exhibits the same loss of developer tab as above.
I attach the file from expts 1 & 2, it is NOT currently displaying a developer tab
Is this a user error?
Could this sudden change be the unfortunate outcome of a routine Windows system update? Ought I to try a system restore back to a point 2 weeks ago before this issue started?