An invalid XML character (Unicode: 0x1c) was found in the value of attribute "defaultValueLiteral" and element is "eStructuralFeatures

[aba]

Sometimes when you are working with some models everything might seems
to work. but suddenly it stops working and you get an error in the
log stating as An invalid XML character (.#$
%@.........................

a sample of the error found in log is as follows....
--------------------------------------------------------------------------------------------------------------------------------------------
at
org.jboss.proxy.ejb.StatefulSessionInterceptor.invoke(StatefulSessionInterceptor.java:
106)
at org.jboss.proxy.ClientContainer.invoke(ClientContainer.java:91)
at $Proxy482.read(Unknown Source)
... 100 more
Caused by: java.lang.Throwable: org.eclipse.emf.ecore.resource.Resource
$IOWrappedException: An invalid XML character (Unicode: 0x1c) was
found in the value of attribute "defaultValueLiteral" and element is
"eStructuralFeatures".
... 139 more
Caused by: org.eclipse.emf.ecore.resource.Resource$IOWrappedException:
An invalid XML character (Unicode: 0x1c) was found in the value of
attribute "defaultValueLiteral" and element is "eStructuralFeatures".
at org.eclipse.emf.ecore.xmi.impl.XMLLoadImpl.load(XMLLoadImpl.java:
160)
at
org.eclipse.emf.ecore.xmi.impl.XMLResourceImpl.doLoad(XMLResourceImpl.java:
155)
at
org.eclipse.emf.ecore.resource.impl.ResourceImpl.load(ResourceImpl.java:
884)
at
org.easypersistence.core.archive.LuceneArchive.getExistingType(LuceneArchive.java:
202)
... 138 more
-------------------------------------------------------------------------------------------------------------------------------------------

The reason for this is not known, but this usually occurs only when
you have recently made changes and deployed the model. But it might
occur otherwise also.

The immediate solution for this would be to delete the latest file in
the folder
...../default/data/easypersistence.data/dimension/<model name>

this is a work around and not a solution..................