Problems Uploading external forms

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Hi,

I have been running a site using Concrete5 for about a year now and we have several forms on our site including a number of external forms.

I have noticed a problem recently where if I upload an external form and accept the edits to the page the whole page goes to a blank white and can't be accessed by anyone. The only way to bring back the page is to approve an old version and then delete the latest one.

This problem is the same whether it is a new page or an old one and if it is a new external form or one already loaded into the blocks on our site.

Any help will be greatly appreciated.

Thanks!