I don't usually attach files so I'm not that familiar, but I just did one as a test and it worked. (Test)
I don't believe it is related to the pop up situation, so I am moving this post. I assume it's a file size similar to other attachments you do? Is there anything different than normal? I know I have disabled and re-enabled several modification scripts, and may have deleted one or two I thought wasn't being used.
Let me know. Thanks.
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