# TFS Build failing
**URL:** https://www.finalbuilder.com/forums/t/tfs-build-failing/1584
**Category:** Discussion
**Created:** [September 1, 2010, 12:18pm UTC](https://www.finalbuilder.com/forums/t/tfs-build-failing/1584 "2010-09-01T12:18:53Z")
**Posts on this page:** 8
**Page:** 1
### Author:  [@utveckling](https://www.finalbuilder.com/forums/u/utveckling)
#### Post date: [September 1, 2010, 12:18pm UTC](https://www.finalbuilder.com/forums/t/tfs-build-failing/1584/1 "2010-09-01T12:18:53Z")
I've started to play with using FinalBuilder 7 for my TFS builds and I have followed the article [dead link removed]. But I am having lots of trouble getting it to work. When I queue my build I alwasy get the following error:
FinalBuilder project failed with error code 99. Please see the build log for details.
Exception encountered when running FinalBuilder: Input string was not in a correct format.
at System.Number.ParseDouble(String value, NumberStyles options, NumberFormatInfo numfmt)
at VSoftTechnologies.FinalBuilder.FBCmd.FindLatestVersion()
at VSoftTechnologies.FinalBuilder.FBCmd.Execute()
at VSoftTechnologies.FinalBuilder.TFS.Workflow.RunFinalBuilder.Execute(CodeActivityContext context)
I've tried to disable everything in the FinalBuilder project, but I get the same error message. Any idea what might be causing this?
Thanks,
Magnus Haggren
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### Author:  [@paulsamways](https://www.finalbuilder.com/forums/u/paulsamways)
#### Post date: [September 2, 2010, 1:31am UTC](https://www.finalbuilder.com/forums/t/tfs-build-failing/1584/2 "2010-09-02T01:31:19Z")
Hi Magnus,
Thanks for reporting this bug, we’ll have a new build available soon.
Regards,
Paul.
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### Author:  [@utveckling](https://www.finalbuilder.com/forums/u/utveckling)
#### Post date: [September 2, 2010, 7:31am UTC](https://www.finalbuilder.com/forums/t/tfs-build-failing/1584/3 "2010-09-02T07:31:48Z")
Good. I was pulling my hair, thinking I was doing something wrong.
/Magnus
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### Author:  [@Vincent](https://www.finalbuilder.com/forums/u/Vincent)
#### Post date: [September 2, 2010, 7:47am UTC](https://www.finalbuilder.com/forums/t/tfs-build-failing/1584/4 "2010-09-02T07:47:36Z")
Hi Magnus
this build has the fix : [https://www.finalbuilder.com/downloads/finalbuilder/aex6/FB700\_639.exe](https://www.finalbuilder.com/downloads/finalbuilder/aex6/FB700_639.exe)
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### Author:  [@utveckling](https://www.finalbuilder.com/forums/u/utveckling)
#### Post date: [September 2, 2010, 12:16pm UTC](https://www.finalbuilder.com/forums/t/tfs-build-failing/1584/5 "2010-09-02T12:16:56Z")
I've installed the latest build but I still get the error.
/Magnus
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### Author:  [@paulsamways](https://www.finalbuilder.com/forums/u/paulsamways)
#### Post date: [September 3, 2010, 12:10pm UTC](https://www.finalbuilder.com/forums/t/tfs-build-failing/1584/6 "2010-09-03T12:10:45Z")
Hi Magnus,
Is it the exact same error? If it is, could you check and make sure that the machine which the build is running on has been correctly updated with that build?
Regards,
Paul.
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### Author:  [@utveckling](https://www.finalbuilder.com/forums/u/utveckling)
#### Post date: [September 5, 2010, 7:18am UTC](https://www.finalbuilder.com/forums/t/tfs-build-failing/1584/7 "2010-09-05T07:18:22Z")
I've double checked, and the version of fbcmd.exe is 7.0.0.639. And when I try to run the build I get the exact same error as before. I have not tried to restart the TFS machine yet. I'll try that and see if there's a difference.
/Magnus
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### Author:  [@utveckling](https://www.finalbuilder.com/forums/u/utveckling)
#### Post date: [September 5, 2010, 9:36am UTC](https://www.finalbuilder.com/forums/t/tfs-build-failing/1584/8 "2010-09-05T09:36:07Z")
After a restart of the TFS server, the build runs ok. So the problem seems to be solved.
Thanks,
Magnus