PowerAda Another Session Exists
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This dialog appears when an existing lock file is found, which usually happens because another powerada process is running. Multiple powerada sessions may co-exist with no problems; however, if you perform browsing operations from XEmacs (see "Using XEmacs with Powerada" in Chapter 4), they will only work with the most recently started powerada session.
This dialog may also exist if a previous powerada process crashed or was killed, in which case you can simply click OK and ignore it.