I get the following error whenever I try to use natbib in my current document (It does not happen if I start a clean document though):
[1] [1] (./thesis3nobib.toc [2] [3] ! Undefined control sequence. [EMAIL PROTECTED] ->[EMAIL PROTECTED] l.96 ...aphy}}\endgroup }}}\mark {}\endgroup }{61} Switching natbib off removes the problem, I however need citations in parenthesis and the ability for citations to use linebreaks properly. Changing the bst file seems to make no differenc. The offending .toc line is: \contentsline {chapter}{Bibliography\begingroup \let \let \let \let [EMAIL PROTECTED]@protect \xdef {\MakeUppercase {Bibliography}}{\csname foreignlanguage \endcsname {english}{Bibliography\begingr oup \let \let \let \let [EMAIL PROTECTED]@protect \xdef {\MakeUppercase {Bibliography}}{\MakeUppercase {Bibliography}}{{\MakeUppercase {Bibliography}}{\MakeUppercase [EMAIL PROTECTED] {{ \MakeUppercase {Bibliography}}{\MakeUppercase {Bibliography}}}\mark {\MakeUppercase {Bibliography}}\endgroup }}{{\MakeUppercase {Bibliography}}{\MakeUppercase [EMAIL PROTECTED] {{\Mak eUppercase {Bibliography}}{\csname foreignlanguage \endcsname {english}{Bibliography\begingroup \let \let \let \let [EMAIL PROTECTED]@protect \xdef {\MakeUppercase {Bibliography}}{\MakeUppercase {B ibliography}}{{\MakeUppercase {Bibliography}}{\MakeUppercase [EMAIL PROTECTED] {{\MakeUppercase {Bibliography}}{\MakeUppercase {Bibliography}}}\mark {\MakeUppercase {Bibliography}}\en dgroup }}}\mark {}\endgroup }{61} Does anybody have any ideas what could be causing this? Thanks in advance. -- |\ /-------\ | ____ | -/ o \ \\/ ______/ | -\ \__-/ _ _|__/ |/ \-------/ _/_\______/ |_ |_ ___________/ ~~~~~~~ Gordon Wells Department of Biochemistry University of Pretoria