Javascript Error then Plugin doesn't insert
I have a problem on a site that I'm building. I get the following Javascript error when I try to insert a plugin:
I have tried deleting the WinCache file and also have tried making sure the behaviours panel isn't visible but this doesn't help.
After clicking the OK button repeatedly until it clears I then try adding the plugin.
I then get the following error:
I then get the Javascript error again, press OK lots of times and then nothing gets inserted.
Sometimes I get this error as well: