Program always hangs at Default_Handler

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Hi, recently my program started to stop in the Default_Handler for Exceptions after I call DS_ADC_DEMOD_Start(&DS_ADC_DEMOD_0);
I think the cause is the DS_ADC_DEMOD App.
I tried to enable the trigger Function for it, but I couldn't figure it out, so I turned it off again and since the I have this problem. Everything was fine before.

I use the XMC4500 Relax Lite and DAVE 4
The config for the App:
2 Channel, 10000kHz, external Clock Master, Direct clock, samle on rising edge, Diret polarity
CIC3, 256 Decimation, no aux , no trigger
Event on Channel A connected to an Interrupt App,
Both pins on tristate

If anyone knows why this is happening, please tell me. I need this program for an assignment and I can not figure it out.
Thanks a lot!

Regards
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I recreated the project from scratch. Now it works again.
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