After applying changes to PIX configuration, it gives error then PDM loses connection to PIX

I am trying to configure a PIX 506E to forward a port to a device on the inside network. Connecting to PDM works fine until I try to apply the changes then it errors out. The command I am entering is:
name 10.1.0.5 KVM
and the error I get is:
PDM received an error while sending this command. Click Resend and if the browser
prompt you to verify a new certificate or to provide a username/password, please do so.
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MultiTrendsAsked:
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debuggerauCommented:
what version PDM are you using?

You browser security settings may need tweaking, java permissions too...

http://www.cisco.com/en/US/docs/security/fwsm/fwsm23/pdm41/release/notes/pdmrn41.html#wp141771

Have you tried the newest firmware and the new ASDM client?
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MultiTrendsAuthor Commented:
I am using the following:
Cisco PIX Firewall Version 6.3(5)
Cisco PIX Device Manager Version 3.0(4)

I haven't worked with a PIX for a few years, what is the ASDM client? I will check the browser security.

Thanks!
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batry_boyCommented:
You will also want to check the Java version you are using on the client.  I've been told by a TAC engineer that the newer Java 1.6 version can cause this issue, but I've never verified this.  If you are running 1.5 or 1.6 Java, try downgrading to 1.4 and see if it helps.
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MultiTrendsAuthor Commented:
ok, I will try that. I am using the latest Java right now.
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debuggerauCommented:
OK, thanks for that clarification..

The older version of PDM will definitely have a problem with the latest java client, either upgrade to a newer firmware, or start downgrading. There are many security flaws in the old version and I recommend an upgrade path of action...

You may, however need to check your memory amount in the PIX as the new version has greater requirements...
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MultiTrendsAuthor Commented:
That worked. It was the Java version conflict. I tried from a computer with Java 1.4 and no errors. Thank very much for your help!!
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