I think this has something to do with a vba I created for placing breaklines. For some reason microstation is creating Default.mvba files all over the place. I don't know what I have done wrong...any suggestions?
I was having the same problem: microstation was creating a Default.mvba file everytime I open a DGN file in the same folder of DGN file.
I think this happens when you don't have a valid mvba file in the autoload VBA project Manager or variable MS_VBAAUTOLOADPROJECTS is empty or wrongly defined. This can happen when you delete or rename the mvba file that is autoloading by default.
If you fix this, MS will stop creating Default.mvba file.