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java.io.IOException: Object type not recognized
Created attachment 37429 [details] java.io.IOException: Object type not recognized
It's probably problem of broken mdr storage. Try deleting directory {userdir}\var\cache\mdrstorage, it will force to regenerate mdr metadata
I am closing all reports in category Java/Unsupported as wontfix. These should be dead issues --- if the reported cases are against some live part of the NetBeans IDE please reopen and we can discuss to which category they belong.