error in destructors of global vars (in .exe)

[khemu]

I am receiving the following error when the exe exits :
error in destructors of global variables

I have only one global variable defined in the main thread (str+).

Code:

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str+ PSR_CURDIR = CurDir
if(find(_s "PSR" 0 1) = -1)
,PSR_CURDIR = _s.expandpath("$desktop$\PSR")

mac "PSR_Load"
1
Play 1 _s.format("%s\media\startup.wav" PSR_CURDIR) 0
2
SendMessage hDlg_PSR_Load WM_CLOSE 0 0
PSR_Main_Dlg 0 0 0 0