4.5 preview, math nodes preventing cooking

pedro_clericuzzi_1 · October 10, 2014, 10:41pm

I’m having problems with the cooker throwing up errors like these in some math expressions:

Error: Broken Node: K2Node_Tunnel /Game/UI/BasicHUD.BasicHUD:UpdateFade.K2Node_MathExpression_52.MathExpression.K2Node_Tunnel_459 keeps removed/invalid pin: EdGraphPin /Game/UI/BasicHUD.BasicHUD:UpdateFade.K2Node_MathExpression_52.MathExpression.K2Node_Tunnel_459.EdGraphPin_1488. Try refresh all nodes.

Here’s the math node:

And no, refreshing all nodes doesn’t work. The blueprints compile and work without problems in PIE and even mobile preview, it’s only during cooking using the Project Launcher that problems arise. For now I’m having to avoid using math expressions and expand them all.

anonymous_user_4edfbde5 · October 16, 2014, 5:54pm

I’m experiencing the same problem. ¿Anyone has ideas about this problem?

SwiftIllusion · October 24, 2014, 8:47am

Same issue, regrettably without any solution. Which is frustrating because math nodes have been one of my favorite additions-not being able to organize a bunch of calculations into a single node makes everything a lot more bloated and messy so I’m disappointed that this can’t be done now.

pedro_clericuzzi_1 · October 24, 2014, 2:21pm

I found a workaround to not mess up your code:

Copy the math expression string
Expand your math node
Collapse the nodes into a collapsed graph
Paste the math expression string as the graph name

This will “freeze” your math node, but at least visually it remains the same and it won’t cause packaging problems.

anonymous_user_b9532c9a · October 24, 2014, 4:08pm

Hi everyone,

I was able to reproduce this and have entered a bug report, UE-4609 to be assessed by the development staff.

SwiftIllusion · October 24, 2014, 9:55pm

Awesome thanks for that, means you can’t edit it afterwards like a math node but at the very least when it’s complete knowing you can recollapse it to keep it taking up minimum space is good :).

SwiftIllusion · October 24, 2014, 9:56pm

Thank you very much would hate to lose this functionality so goodluck finding a solution for it.

User-1420270633 · November 19, 2014, 8:31pm

I believe this commit fixes the issue: https://github.com/EpicGames/UnrealEngine/commit/7590976480125c45f18eeb6113f31ef449b2aa64

pedro_clericuzzi_1 · November 21, 2014, 3:42pm

A single line of code? Really? Lol, I’ll test it right now.

anonymous_user_2e461349 · February 12, 2015, 10:29pm

What’s the Perforce changelist number for this fix?

Stephen_Ellis · February 13, 2015, 6:16pm

Hi Jeremiah,

Perforce access is only available for our custom licensees (which I suspect you are). If you ask this question on the UDN, we can research and get the CL for you.

Thanks