When I try and open one of my maps I am getting this message that says an attempt was made to access an unnamed file past its end. How do I fix this problem?

Hi James,

Welcome to LaptopGPSWorld!

Sounds like there is an incompatibility problem between the version of Streets & Trips you are running and the version that the map file was created in.

I'm guessing that the map file was some how created in a newer version of Streets but you are trying to open in an older version.

New versions of the software can open old maps but not the other way around.

True, but aren't there limitations on that, too?

I find that AutoRoute 2010 will open a route I created in AR2007 but not routes created in my earlier version which might have been AR2002 or something like that. However, if I up-date the really old route in 2007, I can then open it in 2010 and convert it and save it to 2010.

I think Streets and Trips performs more or less the same way.

Yes - S&T 2010 doesn't support all older map file versions since day 1. Typically, when a new version of S&T is released we discontinue support for an older version. I don't know the support years off the top of my head but we usually support 5-6 versions back.

I have been using Streets and Trips for about a year. And suddenly this message comes up. The only thing I am using from the old version are the pins that I liked better on the older version. I just don't understand why all of a sudden this comes up. How do I fix it?

Hi James,

Is this repeatable? Can you open S&T, create a map, save it out to an .est file and then not be able to open it?

How did you get the old pushpins in the map?

I got the old pushpins by downloading a file that I found on this site. It worked great for several months. I could create a new map okay. Fortunately I remembered that I save all my files off my computer to a site called Carbonite. I got the brilliant idea this morning to restore an older version (October) of the file back to my computer...and it worked. Problem solved but I don't know what caused it.

Based on that description of the problem, particularly the fact that restoring an older version fixed it, I would say that something simply corrupted the data file that gave you the error.

Our PCs, especially the disk drives, are so reliable that it mostly never occurs to us that a few bits can occasionally get twiddled, thus corrupting the data file. So on the rare occasion that it happens we panic and think there's something major gone wrong on our system. Often, it never happens again. Or if it does, it's not frequent and it happens to a data file from another program so we don't make the connection.

It's not unreasonable to suspect an issue with using older stuff in a newer version of S&T. But don't be surprised if it does not occur again.

Good on ya for having a backup!! And remembering it.

...ken...

an attempt was to access an unnamed file past its end

Thread #2 by Larry is absolutely correct. I had this problem when trying to access maps through my homegroup from my laptop. I recently got upgraded to the 2010 version of Streets and Trips by their support team because I was having a problem making this work with Windows 7. I searched for a solution forever then found this site and it dawned on me that one computer was running 2010 and the other 2008 trips. The new version can read old maps from 2008 but the old version cant read new maps from 2010 version.
Makes perfect sence, right?
Looks like I need to go purchase Streets and Trips 2010.

Welcome to the forum Slidergirl!

If you've got any questions about S&T this place is full of people ready and willing to help. We all learn things from each other.