internal latches are permanently disabled.

i am having a problem regarding internal latches.

i have joined two blocks using a block diagram file.

when i compile the whole .bdf file it compiles successfully. bt it shows warning that internal latches of 2nd blocks are permanently disabled.

when i compile .vhd file of 2nd block separately then also it shows the same warnings.

so i am not able to see those latches in my vector waveform file.

what may be the problem??

please reply fast if any one knows the solution..

thank you.