simulation problem

I compiled a AHLD project which works fine, no errors, when I run the simulation (*.vwf)

I get the following error:

# ** Error: (vsim-13) Recompile work.uart_decoder because work.uart_decoder_data_type has changed.

# ** Error (suppressible): (vsim-12) Recompile work.uart_decoder(structure) after work.uart_decoder is recompiled.

# ** Error: (vsim-13) Recompile work.uart_decoder(structure) because work.uart_decoder_data_type has changed.

# Load interrupted

# Error loading design

Error loading design

I deleted all the files from the directory, compile again and run simulation again -> same error!

Thanks for your help

best regards

Kurt