Wondering if anyone can help me out with this one.

When attempting to export in html my website, it does the preparation then in the conversion it stops and an error message pops up.

"cannot export .....\188.png
The file may be locked or open in another program.

I've shut down the computer, had no other programs running other than those that automatically start up and still get the same issue.

Any idea as to what causes this, how I can unlock this, or how I may be able to identify this object when it seems to be in the process of transition or conversion to html when it happens. It doesn't create 188.png in the drawer and I don't think I can figure it out by looking at png's 187 or 186.

Thanks in advance.