Hi, I keep getting the captioned message when I try to VIEW the following LyX document, which is simply to draw a curve using the PGFplots package. I am writing other LyX documents but without any TeX code and they VIEW without any issue.
My steps: 1. Latex preamble: \usepackage{pgfplots} 2. Then in the LyX document the following TeX block: \begin{tikzpicture} \begin{axis} \addplot [blue, line width = 1, smooth] {3*x^2 + 5*x - 2}; \end{axis} \end{tikzpicture} (nothing else in the document). 3. I press VIEW and after 2 or 3 minutes of "thinking" I get the captioned error message. 4. LyX asks me if I want to continue or stop. I click stop and then LyX tells the the "File does not exist" then stops (without crashing). I looked at a previous post on this issue and they said it was Python-related issue, but I have no idea what that means. Could someone help me please? Thanks Ian. PS. I am using LyX 2.1.2 (2014-09-23); Built on Sep 24 2014, 23:53:24; CMake Build I am using Windows 7 and LyX was newly installed only one month ago. I am still a newbie.