Today FlashDevelop got stuck on startup into an infinite loop of the following error:
Binary stream '0' does not contain a valid BinaryHeader. Possible causes are invalid stream or object version change between serialization and deserialization.
I found this really old forum post that said to delete the whole FlashDevelop app data folder.
So, I deleted/renamed the folder located at C:/Users/YOURUSERNAME/AppData/Local/FlashDevelop, and it works again!
This one’s a weird one. Sometimes Flash Builder 4.7 has a problem where weird errors come up in library code (Feathers, usually) that doesn’t have any actual errors in it.
The error raised is the following: com.google.common.collect.ComputationException: java.lang.NullPointerException
The (non-obvious) solution is to find a little button called “Mark Occurrences” in the toolbar and turn it to OFF.
Here’s a picture of what the button looks like when set to OFF:
And here’s what it looks like when set to ON:
Oh, and sometimes restarting Flash Builder doesn’t do it, so sometimes in order to fix it, I have to set mark occurrences to ON, close and restart FB, and then set it to OFF again to get it to work.
More info is available in this post in the Feathers forum here.
I use FlashDevelop for a lot of work projects. It’s a much better IDE for writing code-based ActionScript 3 projects than Flash itself.
Today, out of the blue, it started freezing on startup while trying to load the last project I had open. I thought I’d post about it in case a.) it ever happens to me again, or b.) it helps you, dear reader.
A quick Google search produced this forum thread, which solved it for me.
The solution was to rename/delete the file C:\Users\[USERNAME]\AppData\Local\FlashDevelop\Data\ProjectManager\Settings.fdb, which probably got corrupted.
Back to work! 🙂