If you absolutely need Java for some reason, the best thing to do after uninstalling the bad version, is to install the previously working version that did not cause this error and to set its security levels to maximum. But do not let it start with windows nor have it set to automatically update. The best advice here is to use it only as "On-Demand." Also, if you're browsers flag any Java plug-ins as "unsafe"-------you should listen to that warning and do not enable that unsafe plug-in.