Update: This package solved it:
https://www.mobileread.com/forums/sh...postcount=1295
I ran into this "Java Exception error" because I added the extension the tutorial told me:
Code:
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[22/04/25 21:28] KUAL (v. 2.7)
java.lang.RuntimeException: java.lang.NoClassDefFoundError: javax.swing.JButton
at ixtab.jailbreak.SuicidalKindlet.<init>(Unknown Source)
at ixtab.jailbreak.SuicidalKindlet.<init>(Unknown Source)
at com.mobileread.ixtab.kindlelauncher.KualKindlet.<init>(KualKindlet.java:46)
at com.amazon.kindle.kindlet.internal.kb.zdb(tpb:275)
at com.amazon.kindle.kindlet.internal.kb.KU(tpb:439)
at com.amazon.kindle.kindlet.internal.lifecycle.o.call(psb:412)
at edu.emory.mathcs.backport.java.util.concurrent.FutureTask.run(fw:491)
at edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor.IX(qr:959)
at edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(qr:803)
at java.lang.Thread.run(Thread.java:989)
at java.lang.Thread.startup(Thread.java:1066)
Caused by: java.lang.NoClassDefFoundError: javax.swing.JButton
at com.mobileread.ixtab.kindlelauncher.ui.UIAdapter.createInstance(UIAdapter.java:35)
at com.mobileread.ixtab.kindlelauncher.ui.UIAdapter.<clinit>(UIAdapter.java:28)
at java.lang.Class.runStaticInitializers(Compiled Method)(Class.java:1604)
at com.mobileread.ixtab.kindlelauncher.KualKindlet.getUI(KualKindlet.java:269)
at com.mobileread.ixtab.kindlelauncher.KualKindlet.<init>(KualKindlet.java:152)
at ixtab.jailbreak.SuicidalKindlet.<init>(Unknown Source)
at ixtab.jailbreak.SuicidalKindlet.<init>(Unknown Source)
at com.mobileread.ixtab.kindlelauncher.KualKindlet.<init>(KualKindlet.java:46)
at com.amazon.kindle.kindlet.internal.kb.zdb(tpb:275)
at com.amazon.kindle.kindlet.internal.kb.KU(tpb:439)
at com.amazon.kindle.kindlet.internal.lifecycle.o.call(psb:412)
at edu.emory.mathcs.backport.java.util.concurrent.FutureTask.run(fw:491)
at edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor.IX(qr:959)
at edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(qr:803)
at java.lang.Thread.run(Thread.java:989)
at java.lang.Thread.startup(Thread.java:1066)
I solved it by erasing this part (not the whole extensions, but the MRPI one:
