Xojo 2016.2 - Web: Crash

Targets Web
1

I have a working 2015.4.x WebApp. When I compile it for a Windows Server 2012 with Xojo 2016.2 [even with 2016.1] the compiled App crash, when the user open the WebApp.

I can’t find the error.

The user see this. Where can I search for the error?

2016-07-27 09:07:55
JavaScript Error:
	Error: Unhandled NilObjectException
Message: 

Stack:
RuntimeReraiseException
RuntimeRaiseException
RaiseNilObjectException
MZWebPageV_Colorsheet_LinesSuchen.MZWebPageV_Colorsheet_LinesSuchen.MZFunc_ProjectNummernLaden%%o<MZWebPageV_Colorsheet_LinesSuchen.MZWebPageV_Colorsheet_LinesSuchen>
MZWebPageV_Colorsheet_LinesSuchen.MZWebPageV_Colorsheet_LinesSuchen.Event_Open%%o<MZWebPageV_Colorsheet_LinesSuchen.MZWebPageV_Colorsheet_LinesSuchen>
WebView.Event_Open%%o<WebView>
WebControl.Event_Open%%o<WebControl>
WebObject._ExecuteEvent%b%o<WebObject>sA1v
WebControl._ExecuteEvent%b%o<WebControl>sA1v
WebControl.!_ExecuteEvent%b%ssA1v
WebControl.!_ExecuteEvent%b%ss
MZWebPageV_Colorsheet_LinesSuchen.MZWebPageV_Colorsheet_LinesSuchen.Constructor%%o<MZWebPageV_Colorsheet_LinesSuchen.MZWebPageV_Colorsheet_LinesSuchen>
MZWebPageV_Startseite.MZWebPageV_Startseite.MZLabel_Lines_MouseDown%%o<MZWebPageV_Startseite.MZWebPageV_Startseite>o<WebLabel>i8i8o<REALbasic.MouseEvent>
Delegate.IM_Invoke%%o<WebImageView>i8i8o<REALbasic.MouseEvent>
AddHandler.Stub.16%%i8i8o<REALbasic.MouseEvent>
WebControl._ExecuteEvent%b%o<WebControl>sA1v
WebTextControl._ExecuteEvent%b%o<WebTextControl>sA1v
WebControl.!_ExecuteEvent%b%ssA1v
WebSession._HandleEvent%%o<WebSession>so<_HTTPServer.HTTPRequestContext>
WebSession._HandleRequest%i8%o<WebSession>so<_HTTPServer.HTTPRequestContext>
WebApplication._HandleHTTPRequest%%o<WebApplication>o<_HTTPServer.HTTPRequestContext>
_HTTPServer.HTTPRequestThread.Event_Run%%o<_HTTPServer.HTTPRequestThread>
RuntimeStackCheck
crt_at_quick_exit
BaseThreadInitThunk
RtlUserThreadStart

	User Details: x
2

It could be the moment, the WebApp start using the MySQL-Database.

3

Just look at the top of the stack… under the line that says: RaiseNilObjectException. Use the text to the left of %% and it’ll tell you which method the exception is coming from.