Nios II memory problem

[Altera_Forum]

I am new to NIOS II, i am following the hardware tutorial provided by Altera to make basic Nios system, when i make the complete system in Qsys as instructed following errors are encountered when i click generate 

 Error: onchip_mem: wrong# args: should be "sub_quartus_synth NAME"  while executing "sub_quartus_synth nios ii_onchip_mem"   Error: Generation stopped, 4 or more modules remaining   Error: ip-generate failed with exit code 1: 2 Errors, 0 Warnings  I am short on time and desperate for help. Thanks in advance

[Altera_Forum]

Are you prehaps using space in the name of component?

[Altera_Forum]

Although i got the problem fixed, by first making the project in Quartus and then making its Qsys file, but tutotrial said to start with q sys and then make the project in quartus! thanks