# java.io.FileNotFoundException: DeveloperModuleLoadingServlet

**URL:** <https://forum.inductiveautomation.com/t/java-io-filenotfoundexception-developermoduleloadingservlet/8124>\
**Category:** Module Development\
**Created:** [March 8, 2014, 10:57am UTC](https://forum.inductiveautomation.com/t/java-io-filenotfoundexception-developermoduleloadingservlet/8124 "2014-03-08T10:57:47Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![PRAMANJ](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pramanj/32/66935_2.png) [@PRAMANJ](https://forum.inductiveautomation.com/u/PRAMANJ)\
**Post date:** [March 8, 2014, 10:57am UTC](https://forum.inductiveautomation.com/t/java-io-filenotfoundexception-developermoduleloadingservlet/8124/1 "2014-03-08T10:57:47Z")

</div>

Hi,

While compiling sample modules (e.g. simple tag provider example) it compiles but gives following build fails giving following error at the end. This is in SDK 7.6.4, in 7.6.3 there was no such error it was building the module! Any clues?

C:\Ignition-ModuleSDK-7.6.4\SimpleTagProviderExample\Build\build.xml:80: java.io.FileNotFoundException: [localhost:8088/main/system/Devel ... ingServlet](http://localhost:8088/main/system/DeveloperModuleLoadingServlet)

regards  
PRAMANJ

---

<div class="post-metadata">

**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\
**Post date:** [March 10, 2014, 3:29pm UTC](https://forum.inductiveautomation.com/t/java-io-filenotfoundexception-developermoduleloadingservlet/8124/2 "2014-03-10T15:29:47Z")

</div>

Your Ignition needs to have a license with the developer=true flag set on it for the module loading servlet to be available.