Create a new lyx file and insert an image. Any format will do, except eps. Now try View->DVI. You will be informed that your format could not be converted to eps and are suggested to define a proper converter. However, after clicking OK, the dvi previewer is launched and you can see your figure there, which indeed was perfectly converted to eps.
What happens here is that Qt caches file information, such that if a FileName is constructed when the file doesn't still exist, Qt still thinks it doesn't exist even when the file is later produced by the converter. I think this is done for performance reasons and propose the attached patch. Note that Qt also provides a refresh() method that could be used after performing an operation that may change the file status, but I think that this would be too error prone. Then, maybe it would be better to always disable caching, even for already existing files, but I am not sure. -- Enrico
Index: src/support/FileName.cpp =================================================================== --- src/support/FileName.cpp (revision 22110) +++ src/support/FileName.cpp (working copy) @@ -60,7 +60,9 @@ struct FileName::Private Private() {} Private(string const & abs_filename) : fi(toqstr(abs_filename)) - {} + { + fi.setCaching(fi.exists() ? true : false); + } /// QFileInfo fi; };