I am no Latex guru so if this is something obvious please forgive me. I did search the archives and google and didn't come up with any English results. I am in the planning stages of a cross platform accounting program and need a solution for reports, invoices, estimates, etc. After looking at the various options Latex looks like it might be the way to go. Unfortunately, I did not find any luck when trying to find a latex invoice example I could look at to see how it handles that sort of application, I see information indicating latex will work for the kind of thing I want but all the examples I've found are book/school report/letters, etc. Finally I stumbled onto the fact that a similarly targeted application, SQL-Ledger uses latex for its report templates and invoices. The documentation says to load it in an editor just use sed to replace the % characters with something else so that the editor doesn't mistake the placeholders for comments.
When I try to import the Default-invoice.tex file into Lyx I get this: The layout file requested by the document, scrartcl.layout, is not usable. This is probably because a latex class or style file required by it is not is not available. See the customization documentation for more information. Lyx will not be able to produce output. If I look at the source of the file it does list scrartcl. I thought this might be something with SQL-Ledger but ultimately found that the scrartcl.layout is included with Lyx not with SQL-Ledger. I'm not so much worried about viewing/editing the file now as I am about being able to assist users in editing these files if I opt to use them.