# FinalBuilder Server Error - FBCmd Error: 13 : REQUIREDPACKAGENOTLOADED
**URL:** https://www.finalbuilder.com/forums/t/finalbuilder-server-error-fbcmd-error-13-requiredpackagenotloaded/2407
**Category:** Discussion
**Created:** [August 15, 2015, 9:36am UTC](https://www.finalbuilder.com/forums/t/finalbuilder-server-error-fbcmd-error-13-requiredpackagenotloaded/2407 "2015-08-15T09:36:38Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@deleted\_user](https://www.finalbuilder.com/forums/u/deleted_user)
#### Post date: [August 15, 2015, 9:36am UTC](https://www.finalbuilder.com/forums/t/finalbuilder-server-error-fbcmd-error-13-requiredpackagenotloaded/2407/1 "2015-08-15T09:36:38Z")
Hi,
My finalbuilder server is version ‘7.0.0.324’ ,
and the jobs on the server work fine with the project generated by finalbuilder IDE version ‘7.0.0.993’ .
But after I used finalbuilder IDE version ‘7.0.0.3418’ and modified the ‘Build [VS.Net](http://VS.Net) Solution’ action in my project ,
The new finalbuilder job fail and the error message is as following :
FinalBuilder Server Error
FBCmd Error: 13 : REQUIREDPACKAGENOTLOADED
ERROR! Required package for this project not loaded
Missing package for Action class : TProjectParameterCollection
Please help to check this issue , thank you.
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### Author:  [@Vincent](https://www.finalbuilder.com/forums/u/Vincent)
#### Post date: [August 16, 2015, 6:13am UTC](https://www.finalbuilder.com/forums/t/finalbuilder-server-error-fbcmd-error-13-requiredpackagenotloaded/2407/2 "2015-08-16T06:13:09Z")
Sounds like you have not installed the new version of FinalBuilder on the Server. You will need to do that due to a small change in the project file format (done to resolve a bug).