Error related to ResourceBundle in java

We are using ResourceBundle class in our Java code. Frequently we keep getting this error at runtime...
What could be the issue?
com.opensymphony.xwork2.util.LocalizedTextUtil reloadBundles Could not reload resource bundles
                                 java.lang.NoSuchFieldException: cacheList
	at java.lang.Class.getDeclaredFieldImpl(Native Method)
	at java.lang.Class.getDeclaredField(
	at com.opensymphony.xwork2.util.LocalizedTextUtil.clearMap(
	at com.opensymphony.xwork2.util.LocalizedTextUtil.reloadBundles(
	at com.opensymphony.xwork2.util.LocalizedTextUtil.findDefaultText(
	at com.opensymphony.xwork2.util.LocalizedTextUtil.getDefaultMessage(
	at com.opensymphony.xwork2.util.LocalizedTextUtil.findText(
	at com.opensymphony.xwork2.TextProviderSupport.getText(
	at com.opensymphony.xwork2.ActionSupport.getText(
	at org.apache.struts2.components.Text.end(
	at org.apache.struts2.views.jsp.ComponentTagSupport.doEndTag(

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You don't have property named "cacheList" defined in the resource bundle

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cuttieveenzAuthor Commented:
Can you plz provide a sample? Where is this property defined?
cuttieveenzAuthor Commented:
When I set struts.devMode=false in struts.xml the error vanished
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I think it has got suppressed.
It looks like you are missing
cacheList="The localized value of cacheList"
in a ressource file.

Now the question is about the key. Is it your key or coming from struts? Is it a tag from struts that yield this error?
cacheList is internal to Struts2 / webwork. What version are you running? I see one i18n related bug report in opensymphony related to automatic bundle reloading. Perhaps it is an issue that has been fixed in a later version than you are running? Are you running 2.1.x less than 2.1.3?
Try the latest jars and see if it resolves.

The bug I was referring to is:

It says fix was in 2.1.3. I am running 2.1.6 with no problems.
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