Navigate to Spectrum in any browser or RSI Launcher Enter the Quick-Access Search at the top-right or the Advanced Search page https://robertsspaceindustries.com/spectrum/community/SC/search Type at least three characteres including one of the following: ( ) [ ] parentheses or brackets. Used to denote a regex group or character set. Black Hole Error Click 'Reload Spectrum' If from Advanced Search page, search query parses again, leading to successive Black Hole Resulting error reflects the escaped character: SyntaxError: "unterminated character class" and "unterminated parenthetical" SyntaxError: "unmatched ) in regular expression" Workaround: Construct a complete query outside of the Search Input field and copy+paste it in (e.g. from Notepad). edit Not surprisingly, this occurs with any uncompleted escape + = Nothing to repeat ? = Nothing to repeat