Hi all, for my figure I want use the package psfrag.
When I use it, the following Latex error occurs "Package inputenc Error: Keyboard character used is undefined ...fiken_Add_Rauschen_Loglog_loglog-3107-01} You need to provide a definition with \DeclareInputText or \DeclareInputMath before using this key." The code before the graphic is included is: \begin_inset ERT status Open \layout Standard \backslash psfrag{a_c/D} { \begin_inset Formula $\frac{a_{c}}{D}$ \end_inset } \end_inset Whats wrong? Regards Susanne