Problem w/ ERDAS files in GM

[Seldom]

A few days ago I downloaded the NLCD 2006 landcover database from this site:
http://www.mrlc.gov/nlcd06_data.php

I was able to view an image of the data in GM, but couldn't extract any of the data.  When I dragged my cursor over the colored portion of the image, GM reported PAL IDX 0, and RGB(0,0,0).  Also, when I zoomed in to the image eventually it went black, but I could zoom out and the color returned.

I reported this to Mike, who tested it at GM and who had no problem opening the file, but couldn't suggest any reason I couldn't open it.  From this I conclude there must be something weird on my local PC.

Later I obtained the same file as a GeoTIFF and GM opened it fine (using only 36% of my available memory), so I don't think my available memory was the problem.

My system is has an  i7 processor and 8 GB RAM, and I'm running Win7-64.

I'd appreciate any suggestions.

[maps4gps]

I can not offer any suggestions on your problem; however, I downloaded the 2006 in August from the USGS seamless server and did not have any issues with GM.

[Seldom]

I found I could access the data if I extracted the IMG, RRD, and IGE files from the zip and opened the IMG file.  Apparently the IMG (23KB) references the data (16GB).

[Seldom]

I downloaded the 2006 in August from the USGS seamless server and did not have any issues with GM.

Did you get the file as a geotiff, or an ERDAS zip file?  I don't have any problems with geotiffs.

[maps4gps]

As geotiffs. in 2x3 degree files, each specified individually (138 files totaling 1.47 Gb)

[Seldom]

Mike's fixed the problem with ERDAS files now.  Problem had to do with unzipping the IGE file.