# FP app crashes

**URL:** <https://tech-community.robotics.abb.com/t/fp-app-crashes/3467>\
**Category:** Developer Tools\
**Created:** [March 25, 2010, 12:11pm UTC](https://tech-community.robotics.abb.com/t/fp-app-crashes/3467 "2010-03-25T12:11:38Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![David\_L](https://avatars.discourse-cdn.com/v4/letter/d/eada6e/32.png) [@David\_L](https://tech-community.robotics.abb.com/u/David_L)\
**Post date:** [March 25, 2010, 12:11pm UTC](https://tech-community.robotics.abb.com/t/fp-app-crashes/3467/1 "2010-03-25T12:11:38Z")

</div>

Hi,

I have a FP application which tends to crash sometimes. The problem occurs only when the application is running and when I press an external cyclestart button witch signal is connected to a systeminput (“MotOnStart”). I have made several similar applications before but never had this error.

The following error message is displayed when the application crashes:

**SYS\_CTRL\_E\_RESOURSE\_HELD**  
**0x004841a**  
**Requested resource is held by someone else**