When I try to export to a pdf format the file saves but not as a pdf. The name of the file appears in the desktop but not the pdf logo. I tried your solution "selecting the file through explorer and pressing f2. Nothing happens… If you can help me I would greatly appreciate it.
I don’t understand what the issue is. If you export PDF from GanttProject (Project > Export > PDF file), it exports to PDF. I don’t know what’s wrong with the PDF logo on your desktop, sorry. Maybe you just don’t have any PDF viewers installed? Or just looking at some other file, not at the one that you exported?