Need some help on calculating class metrics using a tiff file as tile grid

Hello
Although I am using a tiff file with 6 tiles, class metrics are only calculated for the first tile and I get the error message listed below. Thank you. 
05/18/23 17:44:27: Analyzing file: G:\My Drive\QUARENTENA_COVID19\MESTRADO\George_Baltariu_Erasmus23\FRAGSTATS_ClassMetrics\1993_sieve_20_8connect.tif
05/18/23 17:44:28: Warning: Units not specified, meters assumed.
05/18/23 17:44:29: Error: Data buffering failure (level 2).
05/18/23 17:44:29: Analysis failed for file: tile_0014
05/18/23 17:44:29: Run 1 ended.
05/18/23 17:44:29: Results saved using base file name: G:\My Drive\QUARENTENA_COVID19\MESTRADO\George_Baltariu_Erasmus23\FRAGSTATS_ClassMetrics\lll.
05/18/23 17:44:29: Run completed in 2.21s, please review the results.

 

Hello Navarro
Sorry for the long delay in responding but I was out of country and on safari in Africa for the past 6 months. Regarding your issue, It may be caused by the size of the landscape, which should not be an issue in 64-bit Fragstats unless the amount of RAM on your machine is too small. It may also happen if the 32-bit version is used with a large landscape. If you are using the 64-bit version and you are still having the issue, you would need to send me all the relevant files to run on my machine to see what is going on. If it is not your machine then it is likely an issue with the rasters.
Cheers
Kevin

Warning: Units not specified, meters assumed. why?