Mysterious error messages after V2.20 launch

[StepWalk]

After installation of the new V2.20 over my existing V2.02 I'm experiencing some mysterous behavior: The editor starts up normal, containing the usual template. But once I try to load one of my existing projects I'm getting the following error message:

Strangely it's half English and half in German (I'm using a German Windows version) I have no idea where this message is coming from. Some C++ runtime library, used by B4A ? or is it the DoNet framework ?

The german part says something like "Invalid object has been referenced"

That error box is shown immediately after the source code has been loaded. Some small projects do compile normal afterwards and the generated code is running ok on emulator and phone. Some other projects raise dozens of additional error boxes and do end up in a red crossed empty screen, like this:

The above half german error box says: "Object already in use"

I removed the old B4A folder and made a new installation from scratch -the same thing. Finally I reinstalled my old V2.02 and everything was running fine again.

Any ideas what I may try to use my new update and benefit from its new features ?

 

[agraham]

What OS version is that? The IDE form title is centralised and I only remember seeing that on Windows 8, but it doesn't look like Windows 8!

EDIT:- The error is being raised in Basic4android which has trapped the exception.

 

[StepWalk]

Im using Windows XP Professional SP3.

EDIT:
...and just in case that it might be of interest, here are my installed dotnet versions:

 

[prokli]

Get same strange error

Hi everybody!

I installed b4a release V2.2 today and get same strange error message.
I tried to run the new b4a version on a XP and WIN7 (64Bit) PC with same behaviour.
Compilation works!
So I reinstalled b4a version 2.0 it every works fine again!

My OS is XP and Win7 (German language)
It seems that there are some activities which are missing any links to whatever?

Thanks

 

[StepWalk]

Hi prokli...

...good to know that I'm not alone

 

[agraham]

Try starting Basic4android.exe with "-log" as a command line argument. Close the IDE after the error has occurred and see if there is a c:\temp\log.txt" file. If so there may be a clue in there so post it here.

 

[StepWalk]

Well agraham...

I did as you recomended and got that log file:

System.NullReferenceException: Der Objektverweis wurde nicht auf eine Objektinstanz festgelegt.
bei Dbasic.Lang.a(Document A_0, bm A_1, dc A_2, dc A_3, DynamicToken A_4, Boolean A_5, Boolean A_6)
bei Dbasic.Lang.a(Document A_0, String A_1, dc A_2, dc A_3, bm A_4, dp A_5)
bei Dbasic.Lang.a(ae A_0, dp A_1, dc A_2, dc A_3, dc A_4)
bei Dbasic.Lang.a(ae A_0, bm A_1)
bei di.b()
bei System.Windows.Forms.Control.InvokeMarshaledCallbackDo(ThreadMethodEntry tme)
bei System.Windows.Forms.Control.InvokeMarshaledCallbackHelper(Object obj)
bei System.Threading.ExecutionContext.runTryCode(Object userData)
bei System.Runtime.CompilerServices.RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup(TryCode code, CleanupCode backoutCode, Object userData)
bei System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
bei System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
bei System.Windows.Forms.Control.InvokeMarshaledCallback(ThreadMethodEntry tme)
bei System.Windows.Forms.Control.InvokeMarshaledCallbacks()
OptimizedDexer exitCode=-1
dontWait=True

Does it make any sense for you ?

 

[agraham]

Does it make any sense for you ?

No, because the code is obfuscated and I can't (usually) be bothered to tease it apart, but it will be of use to Erel when he sees it.

It is interesting that both of you are using German variants of different Windows versions. 2.2 seems OK on my English Windows 7 64 bit machine.

 

[Erel]

Thank you for posting the logs. I believe that I know what causes this issue. I will further investigate it.

 

[prokli]

Problem disappeared after installing b4a upgraded version 2.22!!
Works perfectly :sign0098:
Thanks!

 

[Erel]

Great

 

[StepWalk]

...everything works like a charm now with V2.22
Thx Erel.