# Runtime Error attempting to view build log from 'View History'
**URL:** https://www.finalbuilder.com/forums/t/runtime-error-attempting-to-view-build-log-from-view-history/3283
**Category:** Bugs
**Created:** [September 2, 2010, 6:16am UTC](https://www.finalbuilder.com/forums/t/runtime-error-attempting-to-view-build-log-from-view-history/3283 "2010-09-02T06:16:13Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@karmasponge](https://www.finalbuilder.com/forums/u/karmasponge)
#### Post date: [September 2, 2010, 6:16am UTC](https://www.finalbuilder.com/forums/t/runtime-error-attempting-to-view-build-log-from-view-history/3283/1 "2010-09-02T06:16:13Z")
Hi,
We are using finalbuilder 7.0.0.170 under windows 2008 R2 64bit (under hyper-v).
When we click on one particular entry in the 'Project History' of one of our build projects final builder 7 is giving us a generic error page (attached). This would appear to be a bug in itself as I don't believe that this content is meant to be seen in a production environment.
The actual error appears to be an access violation in the fbloggingserver.exe.
The Application Event log has the following details:
Event code: 3005
Event message: An unhandled exception has occurred.
Event time: 2/09/2010 4:01:02 PM
Event time (UTC): 2/09/2010 6:01:02 AM
Event ID: 9c1be972ad444960a60e504ccfd6a25b
Event sequence: 5918
Event occurrence: 2
Event detail code: 0
Application information:
Application domain: /LM/W3SVC/1/ROOT/FBServer7-1-129278561002157564
Trust level: Full
Application Virtual Path: /FBServer7
Application Path: C:\Inetpub\FBServer7\
Machine name: LOOKFINALBUILDE
Process information:
Process ID: 2724
Process name: w3wp.exe
Account name: IIS APPPOOL\DefaultAppPool
Exception information:
Exception type: InvalidLogResponseException
Exception message: The response sent back from the logging server was an error. Message: DoGetUnitTestSummaries: Access violation at address 0040815E in module 'FBLoggingServer.exe'. Write of address 0065004C
Request information:
Request URL: http://192.168.1.193/FBServer7/BuildLog.aspx?ProjectName=trunk+incremental&BuildId=2bFC873AF5-A46A-4B86-BFE1-5C92E3BB11AB2d&ReturnURL=2eAn unhandled exception has occurred.fProjectHistory.aspx
Request path: /FBServer7/BuildLog.aspx
User host address: 192.168.1.158
User:
Is authenticated: False
Authentication Type:
Thread account name: IIS APPPOOL\DefaultAppPool
Thread information:
Thread ID: 9
Thread account name: IIS APPPOOL\DefaultAppPool
Is impersonating: False
Stack trace: at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg)
at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type)
at VSoftTechnologies.FinalBuilderServer.Remoting.IFBServerManager.GetUnitTestSummaries(String projectName, String buildID)
at VSoftTechnologies.FinalBuilderServer.Web.BuildLog.LoadUnitTestSummary(String projectName)
at System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e)
at System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e)
at System.Web.UI.Control.OnLoad(EventArgs e)
at VSoftTechnologies.FinalBuilderServer.Web.Classes.CommonPage.OnLoad(EventArgs e)
at VSoftTechnologies.FinalBuilderServer.Web.Classes.ProjectPage.OnLoad(EventArgs e)
at System.Web.UI.Control.LoadRecursive()
at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
Custom event details:
---
### Author:  [@karmasponge](https://www.finalbuilder.com/forums/u/karmasponge)
#### Post date: [September 2, 2010, 7:26am UTC](https://www.finalbuilder.com/forums/t/runtime-error-attempting-to-view-build-log-from-view-history/3283/2 "2010-09-02T07:26:25Z")
Update: This seems to be occurring even more now!
---
### Author:  [@paulsamways](https://www.finalbuilder.com/forums/u/paulsamways)
#### Post date: [September 3, 2010, 4:42am UTC](https://www.finalbuilder.com/forums/t/runtime-error-attempting-to-view-build-log-from-view-history/3283/3 "2010-09-03T04:42:41Z")
Hi Simon,
Could you update to the following build of FinalBuilder Server and then follow the instructions below to turn on the detailed exception logging.
URL: https://www.finalbuilder.com/downloads/fbserver7/FBServer\_7.0.0.172.exe
To turn on detailed exception logging:
Download the attached archive, extract it to a temporary location. Apply 'EnableLogExceptions.reg' to the registry to enable logging.
Restart the logging service and then use FinalBuilder Server web interface to navigate to the pages where the exception occurs. Once you've seen the error, go to C:\Windows\Temp and send in the FB7LogServerExceptions.txt file to support [at] finalbuilder.com. You can then apply the other registry path to disable the detailed logging.
Regards,
Paul.
[LogExceptions.zip](https://www.finalbuilder.com/forums/uploads/default/original/2X/7/792ca96a67561a736eebd3fadf8371ceec2d6079.zip) (634 B)