Crash signature - nsStyleSet FileRules
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The template "crashsig" does not exist or has no approved revision. nsStyleSet::FileRules(int (*)(nsIStyleRuleProcessor*, void*), RuleProcessorData*), nsStyleSet::FileRules(int (*)(nsIStyleRuleProcessor*, void*), RuleProcessorData*, nsRuleWalker*)
This type of crash is often caused by:
- The My Web Search Toolbar: See How to uninstall the My Web search toolbar.
- Malicious software: For steps to take to resolve problems with malware and Firefox, see Troubleshoot Firefox issues caused by malware.
For troubleshooting other types of Firefox crashes, see Firefox crashes - Troubleshoot, prevent and get help fixing crashes.