DGBL v0.99 Exception Crash re: "customConv is null" \ VOGONS

DGBL v0.99 Exception Crash re: "customConv is null"

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First post, by Pr3tty F1y

Posted on 2025-12-05, 00:34

Pr3tty F1y Offline

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Rank: Newbie
Posts: 17
Joined: 2017-08-19, 21:22

I'm using the latest development builds of Dosbox Staging (which I don't think should have a major effect on DBGL except for some of the options may not line up but Dosbox Staging's support of deprecated conf values seems pretty good) and just upgraded to DGBL v0.99 and I'm using a local JRE install into the DBGL directory per their site.

However, if I try to edit any config within DGBL and then click 'OK', I get this exception when DBGL tries to commit the change (which does not get committed to the conf file due to the crash). Any thoughts on what's causing it and what I can do to address it/work around it?

1Exception in thread "main" java.lang.NullPointerException: Cannot invoke "org.dbgl.gui.interfaces.DaControlConvertor.toControlValues(String)" because "customConv" is null
2        at org.dbgl.gui.controls.Chain.init(Chain.java:423)
3        at org.dbgl.gui.abstractdialog.EditConfigurableDialog.createDosboxPage(EditConfigurableDialog.java:216)
4        at org.dbgl.gui.abstractdialog.EditProfileDialog.createDosboxPage(EditProfileDialog.java:186)
5        at org.dbgl.gui.dialog.EditSingleProfileDialog.createDosboxPage(EditSingleProfileDialog.java:520)
6        at org.dbgl.gui.abstractdialog.SizeControlledPagedDialog.lambda$computePage$5(SizeControlledPagedDialog.java:115)
7        at java.base/java.util.HashMap.computeIfAbsent(Unknown Source)
8        at org.dbgl.gui.abstractdialog.SizeControlledPagedDialog.computePage(SizeControlledPagedDialog.java:114)
9        at org.dbgl.gui.dialog.EditSingleProfileDialog.access$10400(EditSingleProfileDialog.java:83)
10        at org.dbgl.gui.dialog.EditSingleProfileDialog$3.widgetSelected(EditSingleProfileDialog.java:545)
11        at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:265)
12        at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:91)
13        at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4326)
14        at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1174)
15        at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4124)
16        at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3712)
17        at org.dbgl.gui.abstractdialog.BaseDialog.open(BaseDialog.java:120)
18        at org.dbgl.gui.dialog.MainWindow.doAddProfile(MainWindow.java:1515)
19        at org.dbgl.gui.dialog.MainWindow$62.widgetSelected(MainWindow.java:1974)
20        at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:265)
21        at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:91)
22        at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4326)
23        at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1174)
24        at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4124)
25        at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3712)
26        at org.dbgl.gui.abstractdialog.BaseDialog.open(BaseDialog.java:120)
27        at org.dbgl.gui.Launcher.main(Launcher.java:55)

Reply 1 of 1, by Pr3tty F1y

Posted on Yesterday, 13:25

Pr3tty F1y Offline

Rank Newbie

Rank: Newbie
Posts: 17
Joined: 2017-08-19, 21:22

The issue has to be the revisions to the dosbox.conf format used by DOSBox staging. Not sure if it's the individual options or the switch to on/off vs true/false (or both), but it simply seems to be that DBGL doesn't currently support the bleeding edge development builds of DOSBox-Staging.

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