I apologize for not knowing what title this error needs.

[Infraclear27]

[Window Title]
Error

[Main Instruction]
An internal error occured:

[Content]
invalid vector subscript
Please save your work (use 'save as' to so you don't overwrite things)
and restart Magic Set Editor.

You should leave a bug report on https://github.com/twanvl/MagicSetEditor2/issues/
Press Ctrl+C to copy this message to the clipboard.

Call stack:
[00] 00007FF7C61B5567
[01] 00007FF7C664B586
[02] 00007FF7C65E8670
[03] 00007FF7C65E0331
[04] RtlCaptureContext2
[05] 00007FF7C61553EC
[06] 00007FF7C63A12B4
[07] 00007FF7C63CFFB4
[08] 00007FF7C63D11E3
[09] 00007FF7C63CFEB8
[10] 00007FF7C63D0D3A
[11] 00007FF7C621170E
[12] 00007FF7C6217C2A
[13] 00007FF7C621A8F8
[14] 00007FF7C6221ADC
[15] CallWindowProcW
[16] DispatchMessageW
[17] IsDialogMessageW
[18] 00007FF7C621991F
[19] 00007FF7C632272F
[20] 00007FF7C6322782

[OK]

[halian]

This repo hasn't received any commits in three years; try haganbmj's fork.