Unable to Build - Multiple "UnknownFunction" Errors
I have been unable to build my project. I can't seem to find any answers, and the output log doesn't seem to give me any help with tracking down the problem.
The project was originally in 4.17. About a week ago I updated the project to 4.19 and added a few widgets and other functionality. The game runs in the PIE editor, but nothing I have done seems to change any of the errors. I have migrated the project to blank projects and still got the same errors. I even deleted the new widgets I created and still no change.
I packaged the game before, when it was 4.17. Attached is the log file.
I appreciate any help. Thanks.
asked May 07 '18 at 04:03 AM in Bug Reports
I found the answer!
This thread pointed me in the right direction: https://answers.unrealengine.com/questions/418856/how-can-i-narrow-down-the-cause-of-this-handled-er.html
The error was related to my usage of the Select node. I had multiple instances of arrays of structures plugged into the inputs of a select node. After deleting these select nodes, the packaging was successful. It appears that this error can also be caused by the output of a select node being plugged into a intIncrease or intDecrease node.
Now I get to redo all of these select nodes as more cumbersome Switch nodes attached to a series of Set Array nodes...
The odd thing about this error (or errors) is that it only arises from packaging or cooking (in my experience); it does not occur when running playing the game in the Unreal Editor. Also, the errors that appear in the output log don't really give a lot of information (if any) to where to find and fix the error.
I think this should be some kind of error-fix request or feature request: to either
1) allow arrays to properly be inputted into select nodes and allow the outputs of select nodes be plugged into ++ and -- nodes
2) disallow the select node from accepting(struct) arrays and disallow the output of the select node to plug into ++ and -- nodes.
Thank you for your help!
answered May 08 '18 at 02:52 AM
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