blueprints erroring with windows?

[FluffierThanThou]

Reported by: jptrrs
Description:
Hi, @fluffy. I'm getting consistent reports of people experiencing errors when they include a window on their blueprints. Let me know if there's anything I can do on my end. Here's an error log:
https://gist.github.com/HugsLibRecordKeeper/43aad9c5642200dd2fbcca0869ed8a87

[Zemogiter]

I have a similiar exception, also using Open The Windows mod.

Exception in UIRootUpdate: System.InvalidCastException: Specified cast is not valid.
  at Blueprints.BuildableInfo.DrawGhost (Verse.IntVec3 origin) [0x000b7] in <0e419875b3ed406faffbaac3b62eef50>:0 
  at Blueprints.Blueprint.DrawGhost (Verse.IntVec3 origin) [0x00015] in <0e419875b3ed406faffbaac3b62eef50>:0 
  at Blueprints.Designator_Blueprint.SelectedUpdate () [0x00025] in <0e419875b3ed406faffbaac3b62eef50>:0 
  at (wrapper dynamic-method) Verse.DesignatorManager.DMD<DMD<DesignatorManagerUpdate_Patch1>?-716761728::DesignatorManagerUpdate_Patch1>(Verse.DesignatorManager)
  at (wrapper dynamic-method) RimWorld.MapInterface.DMD<DMD<MapInterfaceUpdate_Patch3>?-1754902528::MapInterfaceUpdate_Patch3>(RimWorld.MapInterface)
  at RimWorld.UIRoot_Play.UIRootUpdate () [0x00015] in <4489f1367c1c4d76b2ae1272c8ed691d>:0 
Verse.Log:Error(String, Boolean)
RimWorld.UIRoot_Play:UIRootUpdate()
Verse.Root:DMD<DMD<Update_Patch1>?-921878144::Update_Patch1>(Root)
Verse.Root_Play:Update()

Full log: https://gist.github.com/HugsLibRecordKeeper/da64b925e589cb9f052350f042214bb1

[jptrrs]

Hi Fluffy! I managed to fix this on my latest update. I did some funny business with the linkflags, and that's what was causing it. It took an ugly harmony patch to do it, but it works now. Probably the same as #28 .