When FM acts up it is a good idea to restart fm and or reboot the computer.
Your database could be corrupt of the shortcut may be point to the database. In windows you can right click the shortcut and then click property to view the path and program that the shortcut will run.
You give enough details about your webviewer setup. Are you using any custom function to display the google maps or do you have a calculation compute the url?
Whew. I did a cold re-boot of the computer, plus powered down/up my NASD that stores my knowledge base, and that did the trick.
So simple, and I'm so happy it was nothing more.
Thanks much for your prompt, and correct solution.