Error while reading solution

I keep getting this error popup when there were no errors reported prior to my editing a file.
The error is:

Error while reading solution “”: Invalid javascript file name ‘PITC_0F_contacts_1F_detail_filter.js’, doesn’t have a corresponding object…

Now this form is one that I do not use anymore. I duplicated it some time ago and altered the form.
How do I get rid of this error? Should I delete the form and see?
Where do I look for the “object” ?

The form and the javascript are both visible to me in developer.
There is nothing in the log file related to this error.
Servoy 1.6.2

You usually get this error when a .js file doesn’t have a related .frm file for whatever reason.
You can delete the .js file in your workspace, or using the Navigator view, which should show you the orphan file.

As I said I do have the related .frm and .js for that file!
So there must be some other glitch.
After exiting and re-starting developer a couple of time the error goes away. But it might come back!

Have you tried a “Clean” of your projects (it rebuilds the workspace, which is basically what happens when you restart)?

I have cleaned so many times in an attempt to fix this that I think there is nothing more that can be cleaned!

Well at least your solution is germ-free! ;)

Weird but I duplicated the form and then deleted the duplicated form and then my error went away.