According to installer log it seems that you're unpacking battleLabels.xc twice.
Checking inside .iss that seems to be true.
First occurrence is at line 717
Source: "{app}\res_mods\configs\xvm\Aslain\battleLabels.xc"; DestDir: "{app}\res_mods\configs\xvm\Aslain"; Components: xvm; MinVersion: 0.0,5.0; Flags: ignoreversion
then again on line 814
Source: "{app}\res_mods\configs\xvm\Aslain\battleLabels.xc."; DestDir: "{app}\res_mods\configs\xvm\Aslain"; Components: xvm\panels\Aslain; MinVersion: 0.0,5.0; Flags: ignoreversion
I see that components info is different tho.
Could you please shed some light on "issue".
_Aslain_logs.zip