Oops. Rather than \rightarrow, I mean \Longrightarrow. Best, Curtis O.
================== orig. message below ========================= Hi, all, I've recently reinstalled LyX 1.3.6 (on Mepis linux, 2.6.12 kernel; the problem also implies to 1.3.6 on a Kubuntu installation) after a hdd crash. When run through latex, documents containing \implies produce the dreaded "Undefined control sequence" error. However, instant-preview shows the danged thing just fine. Using \rightarrow works just fine for me; should this be filed as a low-priority bug? I guess I could just define \implies as \rightarrow in the preamble, right? Many thanks, Curtis O.