# Exception when running multiple parallel builds

**URL:** https://www.finalbuilder.com/forums/t/exception-when-running-multiple-parallel-builds/2476
**Category:** Discussion
**Created:** [April 21, 2016, 1:45am UTC](https://www.finalbuilder.com/forums/t/exception-when-running-multiple-parallel-builds/2476 "2016-04-21T01:45:01Z")
**Posts on this page:** 4
**Page:** 1

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### Author: ![pfennig59](https://www.finalbuilder.com/forums/letter_avatar_proxy/v4/letter/p/e56c9b/32.png) [@pfennig59](https://www.finalbuilder.com/forums/u/pfennig59)
#### Post date: [April 21, 2016, 1:45am UTC](https://www.finalbuilder.com/forums/t/exception-when-running-multiple-parallel-builds/2476/1 "2016-04-21T01:45:01Z")

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We often are running up to eight parallel builds, and occasionally it happens that one or two builds fail because an EFOpenError exception.  
  
[Snipped exception log]  
  
Edit: Snipped exception log and placed into issue tracker. - JS

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### Author: ![nevar](https://www.finalbuilder.com/forums/letter_avatar_proxy/v4/letter/n/c4cdca/32.png) [@nevar](https://www.finalbuilder.com/forums/u/nevar)
#### Post date: [April 26, 2016, 1:44am UTC](https://www.finalbuilder.com/forums/t/exception-when-running-multiple-parallel-builds/2476/2 "2016-04-26T01:44:41Z")

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Hi,   
  
 We have found two issues with loading, one with regards to ini file contention, and another with resource loading. Both are address in the build below.   
  
 [http://downloads.finalbuilder.com/downloads/finalbuilder/800/FB800\_1653.exe](http://downloads.finalbuilder.com/downloads/finalbuilder/800/FB800_1653.exe)

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### Author: ![Vincent](https://www.finalbuilder.com/forums/user_avatar/www.finalbuilder.com/vincent/32/938_2.png) [@Vincent](https://www.finalbuilder.com/forums/u/Vincent)
#### Post date: [April 26, 2016, 2:00am UTC](https://www.finalbuilder.com/forums/t/exception-when-running-multiple-parallel-builds/2476/3 "2016-04-26T02:00:38Z")

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BTW, you really should look at using the console version of FinalBuilder for running builds, it uses much less resources (memory/cpu) than the IDE does.   
  
 [http://wiki.finalbuilder.com/display/FB8/Command+Line+Version](http://wiki.finalbuilder.com/display/FB8/Command+Line+Version)

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### Author: ![pfennig59](https://www.finalbuilder.com/forums/letter_avatar_proxy/v4/letter/p/e56c9b/32.png) [@pfennig59](https://www.finalbuilder.com/forums/u/pfennig59)
#### Post date: [May 6, 2016, 2:29am UTC](https://www.finalbuilder.com/forums/t/exception-when-running-multiple-parallel-builds/2476/4 "2016-05-06T02:29:38Z")

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Thank you for the link and the hint.  
But, except for designing the scripts, we always run FB from the command line.