svwayne

Fixed !! - Unistalled MapCreate 6.3 TOPO - Uninstalled Alcohol 120% - Deleted any remaining files in the LEI directory (this is the default installation directory for MapCreate) - Reinstall MapCreate 6.3 TOPO - Reinstall Alcohol 52% I think the error was due to a couple of *.dat files that were left, after the uninstall, in the LEI directory.

MapCreate 6.3 and Vista - Lowrance has a "fix" for MapCreate 6.3 and Vista on their FAQ page in Support. http://primus.lowrance.com/support/resultD...Type=5001#Goto0

Uninstall/reinstall didn't fix the problem. Guess it is tiime to call Lowrance. I agree that it sounds like smething is corrupted. Problem is that when you uninstall MapCreate all of the registry entries and DLLs remain intact and reinstalling MapCreate does not overwrite these files/entries.

I've recently encountered this problem also. Worked fine with the "modification" for several months now. Tried repairing the MapCreate installation but still can't open .usr files. Anyone else with this issue? Guess my next step is to completely uninstall MapCreate 6.3.

I've been on the phone a few times with Lowrance about this problem in particular, but I got a little solution... What kind of card are you using. With mine I am using a SanDisk MicroSD 1GB card, and it reads files fine and the like.. plus when i put the file from mapcreate on it, it sees the file in the browse MMC files section, but does not load up the additional data.... I got one of my spare MMC cards, a SanDisk 32MB MMC, and loaded the same exact file on it. The map data loaded up perfectly and all detail is there. This was a last ditch effort that I was doing just as I got off the phone with Lowrance that is sending me the 2.0 card reader adn new Mapcreate disk... I'm using the 1.1 LEI card reader at present. I've been working with SD cards only, a 256MB, 512MB, and 1GB SanDisk. I'll have to see if I can get hold of a MMC card to see if this works. FWIW - I can download the free detailed lake maps from the Lowrance website, in .AT5 format, and they display fine when loaded on any of my SanDisk cards. I'm guessing that Lowrance implemented a "fix" in the latest firmware rev for the H2Oc that prevents an .AT5 file, created by MapCreate, from loading. Based on the other "fixes" that have "magically" appeared from time to time I'm guessing that Lowrance monitors forums like this and when work-arounds are discovered they implement "fixes" in later revs of their software and hardware. Well, if Lowrance is listening, I just have to say that your method of securing MapCreate by limiting the # of cards you can write to stinks. Why can't you lock the software to 1-2 GPS devices instead? Or at least up the # of cards to 10 or more. If I want to load ALL of the detailed map data from MapCreate to MMC/SD cards I can't do it with only five 1GB cards. I've been using Lowrance iFinders since they were introduced ~5 years ago. I'm on my 3rd one (iFinder, iFinder H2O, iFinder H2Oc). I've been very happy with the performance and value provided by the iFinder units but I'll be looking at the Garmin units next time I'm ready to upgrade because of Lowrance's policy on software. In an effort to prevent a very few people from pirating their software they have made it cumbersome and difficult for those of us who have purchased a legal copy and simply want to use it to make maps for our own use. Rant off -

No luck. I'm wondering if Lowrance closed this loophole when they released the v1.1.0 firmware for the H2Oc. FWIW - I can download an .AT5 format, enhanced lake file, from the Lowrance site and the H2Oc will load it just fine so there must be something different in the .AT5 file created by MapCreate 6.3.

According to the user's manual, and my experience to date, the H2Oc loads map files automatically, except for the Navionics maps.

I'm using a H2Oc with v1.1.0 firmware. I'm experiencing the same issue. I've created the .AT5 map, copied it to both registered and unregistered SD cards, and still can't see the detailed map data. I can browse the SD card and see the file but the H2Oc will not load it. I'm wondering what model iFinder and what version firmware those who have had success with this are using.