Downgrading JDeveloper: Uninstalling Webcenter Extension

Question

Hello,
I'm using JDeveloper 11g release 1.
I installed WebCenter Extensions but now trying to uninstall them; can't find a direct way to do that.
I tried going to <b>Tools --> Preferences --> Extensions</b> , then disabling the Webcenter extensions, restarting JDeveloper, but still when I try to open an old (non-webcenter) application:
1) a pop-up tells me it will be <b>migrated</b>
2) and when attempting to deploy it to Weblogic I face a weird exception:
<b>A Generic exception occurred during loading Customizations.
MDS-00039: error while attempting to parse the document /model/VO/QSearchVO.xml using SAX.
Start of root element expected.
Start of root element expected.
Unexpected exception caught: java.lang.NullPointerException, msg=null </b>
I'm assuming my way of "Downgrading" of JDeveloper is not correct. Any tips??
Thank you in advance!

Answer 1

Hi
Because of this stuck thread I cannot access the console. I tried to place it under the <server> tag in config.xml but I got an error about the validation of the configuration file.
  <server>
    <name>DefaultServer</name>
    <listen-port>
      7101
    </listen-port>
    <listen-address/>
    <tunneling-enabled>true</tunneling-enabled>
    <server-diagnostic-config>
      <name>DefaultServer</name>
      <diagnostic-context-enabled>true</diagnostic-context-enabled>
    </server-diagnostic-config>
    <stuck-thread-max-time>180</stuck-thread-max-time>
  </server>