First time seen this error,
The first below not able to understand
The second one looks flash size overflow. But may not true as I am using mega128 and maximum flash size is 128 * 1024 = 131072 bytes, the error starts from 196673!!!
c:\.....\LOCALS~1\Temp/ccCabaaa.s:799314: Error: value of 199818 too large for field of 2 bytes at 16
c:\.....\LOCALS~1\Temp/ccCabaaa.s:396469: Error: value of 65536 too large for field of 2 bytes at 196673
Reading your experiences about this will be a great learning experience!!