Constant OnFrame / Launch.lua Crashes

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• I'm running the latest version of Path of Building and I've verified this by checking the changelog

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• I've checked for duplicate open and closed issues by using the search function of the issue tracker

What platform are you running Path of Building on?

Windows

How is Path of Building expected to behave?

Expecting normal usage / not constant crashes and / or errors.

How does Path of Building behave?

I'm getting constant OnFrame errors with the latest version of PoB. This happens on all screens, including the builds index. A stack trace as an example from the Build index screen.

Error:

In 'OnFrame': Modules/ModParser.lua:6364: calling 'find' on bad self (string expected, got nil)
stack traceback:
	[C]: in function 'find'
	Modules/ModParser.lua:6364: in function 'scan'
	Modules/ModParser.lua:6498: in function 'parseMod'
	Modules/ModParser.lua:6744: in function 'parseMod'
	Classes/Item.lua:743: in function 'ParseRaw'
	Classes/ItemsTab.lua:1036: in function <Classes/ItemsTab.lua:1004>
	Modules/Build.lua:630: in function 'CallMode'
	Modules/Main.lua:354: in function <Modules/Main.lua:340>
	[C]: in function 'PCall'
	Launch.lua:111: in function <Launch.lua:108>
v2.63.0 master
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A stack trace while viewing the calc tab.

Error:

In 'OnFrame': Classes/CalcSectionControl.lua:291: attempt to index field 'calcsTab' (a trace value)
stack traceback:
	Classes/CalcSectionControl.lua:291: in function 'Draw'
	Classes/ControlHost.lua:91: in function 'DrawControls'
	Classes/CalcsTab.lua:342: in function 'Draw'
	Modules/Build.lua:1204: in function 'CallMode'
	Modules/Main.lua:370: in function <Modules/Main.lua:340>
	[C]: in function 'PCall'
	Launch.lua:111: in function <Launch.lua:108>
v2.63.0 master
Press Enter/Escape to dismiss, or F5 to restart the application.
Press CTRL + C to copy error text.

This is occurring at a fairly constant rate to the point that it's relatively unusable. (Every few seconds, I imagine as part of the UI loop).

I have attempted an uninstall / reinstall but the behaviour / bug has persisted.

How to reproduce the issue

No set behavior appears to trigger this behavior, in that I can't mouse over a particular field and trigger it constantly. It does appear to occur when interacting with the program, navigating around menus, etc.

Start by reviewing the two stack traces at Modules/ModParser.lua:6364 and Classes/CalcSectionControl.lua:291, then follow their callers through Classes/Item.lua, Classes/ItemsTab.lua, Classes/CalcsTab.lua, and Launch.lua:111. Reproduce the errors while navigating menus, the build index, and the calc tab; done means normal interaction no longer produces recurring OnFrame crashes.