Cannot update article

[Leif Simon Goodwin]

I am having huge problems updating articles. Today I edited an article, uploaded a new ZIP file, pressed the Add Selected to Article button, and nothing happened. I discarded the changes, renamed the file and uploaded it again, no joy. Please how do I upload a new file and insert a download link? Last week I had huge problem submitting changes, it kept saying it could not do it. I tried again today and it finally worked. The site seems to be having wobblies. Oh, and my last article was placed in a really weird section. I selected Database / Database / Ado and it was put into COM,COM+ / General.