Welcome to the IDM Forum. This forum is meant as a user-to-user support mechanism where users can share knowledge and tips for all IDM software.
Since these forums are user-to-user based, IDM does not regularly read or reply to the posts in this forum. For problem reports, suggestions, or feature requests, you must email us directly. Our trained technical support staff answers most inquiries within 30 minutes.
If you upload images etc. as ascii you'll end up with corrupted files. Some browsers seem capable of figuring it out, but not all... and not all the time. Netscape is much more picky, so you'd end up with broken or missing pictures for your Netscape users. (Yup, I learned this the hard way )
Same thing with uploading text files as binary. While this is less important for html files, scripts will have a HUGE problem with it and will just not work. This is the most common cause of the "Server 500 Error - Malformed Headers", and other equally unlovely errors that have caused many a webmaster to bang their heads against their computers.