Are you using Apple's iOS configuration utility (http://support.apple.com/kb/dl1466) to build your webclip?
Or are you using Filemaker's released tool for building a webclip?
Chances are something about your script name, variable name or variable values are breaking your link from loading. Try and make sure to remove any spaces and special characters from your naming convention.
Thanks for your reply. I gonna recheck all as you indicated.
We had the same issue.. It was an iOS bug.. They fixed it in 7.0.3 and above.. finally..
Good to know that. Thanks,