I don't know why Firefox is seeing your JavaAppletPlugin.plugin as invalid. (Bug 616271 - Plugin-like files add overhead on every startup explains why "rejected" plugins are entered in the [INVALID] section of pluginreg.dat in case it helps.)
I don't know why Firefox is seeing your JavaAppletPlugin.plugin as invalid. (Bug 616271 - Plugin-like files add overhead on every startup explains why "rejected" plugins are entered in the [INVALID] section of pluginreg.dat in case it helps.)