nullreferenceexception in dashboard after workflow package installation

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James Shannon 9 posts 29 karma points

Nov 12, 2011 @ 10:20

Developer Forum

Hi,

Just installed Workflow for evaluation and am getting the following error/stack trace in the dashboard when I click the root Content node (it returns to normal if I uninstall Workflow):

[NullReferenceException: Object reference not set to an instance of an object.]
   FergusonMoriyam.Workflow.Umbraco.Web.Ui.Instances.OnPreRender(EventArgs e) +88
   System.Web.UI.Control.PreRenderRecursiveInternal() +103
   System.Web.UI.Control.PreRenderRecursiveInternal() +175
   System.Web.UI.Control.PreRenderRecursiveInternal() +175
   System.Web.UI.Control.PreRenderRecursiveInternal() +175
   System.Web.UI.Control.PreRenderRecursiveInternal() +175
   System.Web.UI.Control.PreRenderRecursiveInternal() +175
   System.Web.UI.Control.PreRenderRecursiveInternal() +175
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +2496

Any ideas what would cause this or where to start troubleshooting?

It's installed into an existing site running Umbraco 4.7.1 under .net 4.0 (IIS 6) with SQL & Full Trust.

Thanks,

James

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Darren Ferguson 1022 posts 3259 karma points MVP c-trib

Nov 12, 2011 @ 11:09

0

Hi James,

Could you screengrab or put the whole exception into a word doc and email it to me.

Also - is there a workflow log file in your /App_Data folder?

My email is df at darren-ferguson dot com

Do you get the same effect in the developer section?

Thanks!

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Darren Ferguson 1022 posts 3259 karma points MVP c-trib

Nov 12, 2011 @ 11:16

0

Also - if possible could you send me your web.config file?

Thanks.

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James Shannon 9 posts 29 karma points

Nov 12, 2011 @ 11:29

0

Same in the Developer section - all info sent to your email as requested!

Thanks,

James

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Darren Ferguson 1022 posts 3259 karma points MVP c-trib

Nov 13, 2011 @ 10:20

0

Hi James, I've sent you an email - it looks like the installer only part completed. Did you get any errors during the installation?

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James Shannon 9 posts 29 karma points

Nov 13, 2011 @ 10:41

0

Darren,

I got an error at the end saying there were duplicate sections in web.config (related to log4j - possibly already there from a previous 3rd party package install?) so I removed them to resolve the error - I guess it's possible that some steps after that then didn't execute...

Haven't received an email as yet - could there be an attachment our server didn't like?

Thanks,

James

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Darren Ferguson 1022 posts 3259 karma points MVP c-trib

Nov 13, 2011 @ 10:46

0

Hi James,

I'd sent you the web.config from a working install so i guess it got blocked.

Do you have three workflow tables in your DB? beginning with the word "workflow"

If so we can probably just correct your web.config - otherwise we'll probably need to re-run the installer.

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James Shannon 9 posts 29 karma points

Nov 13, 2011 @ 16:05

0

Darren,

I uninstalled the package, then removed the following lines from web.config, then re-installed without error this time (due to no duplicate web.config entries). However, I still get the above dashboard errors (but do have the 3 workflow SQL tables). Please could you therefore re-send the working web.config as a txt file and I'll compare the final result?

<section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net, Version=1.2.10.0, Culture=neutral, PublicKeyToken=1b44e1d426115821" />

<sectionGroup name="spring">
<section name="context" type="Spring.Context.Support.WebContextHandler, Spring.Web" />
</sectionGroup>

<spring>
<context configSource="config\fmworkflow\workflow.spring.config" />
</spring>

Thanks,

James

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Darren Ferguson 1022 posts 3259 karma points MVP c-trib

Nov 13, 2011 @ 17:48

0

Hi James,

In My mail i'd renamed it to web.txt so it seems your mail filter is scanning for XML and removing

I uploaded it to http://static.darren-ferguson.com/web.txt for you.

The additional config should be:

in //configuration/configSections

<section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net, Version=1.2.10.0, Culture=neutral, PublicKeyToken=1b44e1d426115821" />

<sectionGroup name="spring">

<section name="context" type="Spring.Context.Support.WebContextHandler, Spring.Web" />

</sectionGroup>

In //configuration

<spring>

<context configSource="config\fmworkflow\workflow.spring.config" />

</spring>

In //configuration/appSettings

<add key="log4net.Config" value="config\fmworkflow\Log4Net.config" />

In //configuration/connectionStrings

<add name="WorkflowConnection" connectionString="Server=...;Database=workflow;User ID=....;Password=.....;Trusted_Connection=False;"

providerName="System.Data.SqlClient" />

Note: this should match the connection string of your Umbraco DB.

In //configuration/system.web/httpModules

<add name="Spring" type="Spring.Context.Support.WebSupportModule, Spring.Web" />

In //configuration/system.web/httpHandlers

<add verb="*" path="*.aspx" type="Spring.Web.Support.PageHandlerFactory, Spring.Web" />

In //configuration/system.webServer/modules

<add name="Spring" type="Spring.Context.Support.WebSupportModule, Spring.Web" />

In //configuration/system.webServer/handlers

<add name="SpringPageHandler" verb="*" path="*.aspx" type="Spring.Web.Support.PageHandlerFactory, Spring.Web" />

<add name="SpringContextMonitor" verb="*" path="ContextMonitor.ashx" type="Spring.Web.Support.ContextMonitor, Spring.Web" />

Let me know if this helps.

Thanks

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James Shannon 9 posts 29 karma points

Nov 13, 2011 @ 18:30

0

Darren,

Yes, once I manually added the connectionString and the Spring httpModules, httpHandlers, webServer/modules and webServer/handlers it's now loading the dashboard fine.

Thanks for your help.

James

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