File Upload size issues?

[bkh1914]

@Azélor: Thank you for taking the time to look at my problem file. I'm glad you were able to reproduce my problem. Please accept some rep.

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A summary in case someone else runs into this problem.

I produced a series of files that caused the Upload Image from Computer process in Manage Attachments to hang when the file size exceeded 2 MB. Causes and reasons unknown.

The files could be successfully uploaded three different ways:
- Use Insert Image instead of Manage Attachments (thanks Azélor)
- In Manage Attachments, add the file after successfully uploading another image (don't close the window!)
- Load the file from another site (I used deviantArt)

In my case, a better solution was to scale the file down to a reasonable size, which of course gave a much smaller file that uploaded without problems.