Issue with <AlternateExe>

[OzStick]

Using PinballX 2.01, trying to use the new <AlternateExe> tag so I can use a single XML file etc for VP. Now I find with tables using that tag, when quitting them to go back into PinballX they take an excessive amount of time to close - typically in the order of 15 - 20 seconds.

If I swap those tables into the "version related" XML file and remove the <AlternateExe> tag (whihc is no longer required) then they close in a short amount of time as expected.

Have I missed a setting or is there maybe something in the source code creating a delay when this tag is used?

Here's the contents of my INI file just in case it's something I've done:

Display

Monitor=0
Rotate=270
Windowed=False
WindowWidth=480
WindowHeight=720
WindowX=0
WindowY=65
PlayFieldBrightness=230
WheelTextColor=ffffff80
WheelTextOutlineColor=ff000080
InfoTextColor=ffffff80
InfoTextOutlineColor=ff000000
FilterTextColor=ffffffff
FilterTextOutlineColor=ff000000
MenuColor=ffc8c840
FullScreenWindowed=True
[backGlass]
monitor=1
x=0
y=0
width=1366
height=768
[DMD]
Enabled=True
monitor=2
x=0
y=148
width=640
height=230
[FileSystem]
EnableFileMatching=True
[interface]
DesktopModeEnabled=False
EnableAdditionalDetail=False
ShowSystem=True
ShowRatings=True
[Audio]
StreamVolume=90
SampleVolume=90
PlaySoundInVideos=True
[startup]
playsound=False
playvideo=False
StartWithWindows=No
[KeyCodes]
quit=27
left=160
right=161
select=13
rotate=82
pageleft=90
pageright=191
exitemulator=27
ingame=80
screenshot=83
screenshotbackglass=123
instructions=73
volumedown=109
volumeup=107
[JoyCodes]
quit=10
left=0
right=1
select=2
rotate=3
pageleft=4
pageright=5
exitemulator=6
ingame=13
instructions=14
[Text]
Line1=Press Flippers to scroll thru games
Line2=Pull Plunger to start game
[FuturePinball]
Enabled=True
WorkingPath=C:\Future Pinball
TablePath=C:\Future Pinball\Tables
Executable=Future Pinball.exe
Parameters=/open "[TABLEPATH]\[TABLEFILE]" /play /exit /arcaderender
LaunchBeforeEnabled=false
LaunchBeforeWorkingPath=
LaunchBeforeExecutable=notepad.exe
LaunchBeforeHideWindow=False
LaunchBeforeWaitForExit=True
LaunchAfterEnabled=False
LaunchAfterWorkingPath=
LaunchAfterExecutable=notepad.exe
LaunchAfterHideWindow=False
LaunchAfterWaitForExit=True
MouseClickFocus=True
FPRAMPath=C:\Future Pinball\fpRAM
[VisualPinball]
Enabled=True
WorkingPath=C:\Visual Pinball
TablePath=C:\Visual Pinball\Tables
Executable=VPinball.exe
Parameters=/play -"[TABLEPATH]\[TABLEFILE]"
LaunchBeforeEnabled=false
LaunchBeforeWorkingPath=
LaunchBeforeExecutable=notepad.exe
LaunchBeforeHideWindow=False
LaunchBeforeWaitForExit=True
LaunchAfterEnabled=False
LaunchAfterWorkingPath=
LaunchAfterExecutable=notepad.exe
LaunchAfterHideWindow=False
LaunchAfterWaitForExit=True
NVRAMPath=C:\Visual Pinball\VPinMame\nvram
[ExitScreen]
Enabled=True
EnableExit=True
EnableShutdown=True
[startupProgram]
Enabled=false
WorkingPath=
Executable=notepad.exe
Paramaters=
HideWindow=true
WaitForExit=false
[ExitProgram]
Enabled=false
WorkingPath=
Executable=notepad.exe
Paramaters=
HideWindow=False
WaitForExit=
[AttractMode]
Enabled=True
Timer=1
ShowFor=15
[system_1]
Name=PinballFX2
Enabled=True
WorkingPath=C:\PFX2
TablePath=
Executable=NukeLauncher.exe
Parameters="[TABLEFILE]"
LaunchBeforeExecutable=
LaunchAfterExecutable=
[system_2]
Name=MAME
Enabled=False
WorkingPath=C:\- EMULATORS -\- MAME -
TablePath=C:\
Executable=mamep64.exe
Parameters=[TABLEFILE]
LaunchBeforeExecutable=
LaunchAfterExecutable=
[AutoExit]
Enabled=False
Minutes=10
[Login]
Enabled=False
[internal]
lastselected=2001 (Gottlieb 1971)2001 (Gottlieb 1971)-dBSystem_3
filter_year=
filter_company=
filter_custom=
filtername=Tables
lastwheelcachematchsize=-1123
[setupWizard]
EmuPath1=C:\Emulators
AssetPath1=C:\Assets
RomPath1=C:\Roms
DefaultPathPrompt=True
DownloadDatabasePrompt=True
DownloadEmulatorPrompt=True
WizardMode=1
CustomArray=
SearchArray=
SavePosition=False
SectionIndex=14
SearchText=
EmulatorIndex=0
EmulatorGroupIndex=0
DaphneIndex=0
HTMLAppsIndex=0
ExternalAppsIndex=0
RadioStationsIndex=0
NewsFeedsIndex=0
MappedDrivesIndex=0
SystemIndex=0
ShowPanel=True
FontSize=1
WindowState=0
WindowSize=771,884
WindowLocation=611,99
[Plugin_1]
Enabled=False
Name=PlugInSpeech.dll
[Plugin_2]
Enabled=False
Name=QuickLaunch (PinballX Edition).dll
[Plugin_3]
Enabled=False
Name=Xpadder Plugin.dll
[system_3]
Name=Visual Pinball 990
WorkingPath=C:\Visual Pinball
TablePath=C:\Visual Pinball\Tables
Executable=VPinball990.exe
Enabled=True
Parameters=/play -"[TABLEPATH]\[TABLEFILE]"
LaunchBeforeEnabled=False
LaunchBeforeExecutable=notepad.exe
LaunchBeforeWaitForExit=True
LaunchBeforeHideWindow=False
LaunchAfterEnabled=False
LaunchAfterExecutable=notepad.exe
LaunchAfterWaitForExit=True
LaunchAfterHideWindow=False
[system_4]
Name=Future Pinball Phys25
Enabled=True
WorkingPath=C:\Future Pinball
TablePath=C:\Future Pinball\Tables
Executable=FP_Phys2.5.exe
Parameters=/open "[TABLEPATH]\[TABLEFILE]" /play /exit /arcaderender
LaunchBeforeExecutable=
LaunchAfterExecutable=
[system_5]
Name=VP_PM5
SystemType=1
WorkingPath=C:\Visual Pinball
TablePath=C:\Visual Pinball\Tables
Executable=VP_physmod5.exe
Parameters=/play -"[TABLEPATH]\[TABLEFILE]"
LaunchBeforeExecutable=
LaunchAfterExecutable=
Enabled=True