[NMusers] The system cannot execute the specified program

[nonmem]

> Hello NONMEM Users,
> We have a computer with 4 processors. When I try to run more 
> than 3 NONMEM7 jobs, I am getting the following message:
> Starting nonmem execution ...
> The system cannot execute the specified program.
> KP9022.OUT
> newline
> 1 file(s) copied.
> Could Not Find H:\4\output
> 
> The message is code and directory independent. It always 
> appears when I try to run more than 3 codes. When I test 
> nonmem7 using a laptop, which also has 4 processors, I can 
> execute 4 programs. Also, when I had NONMEM6, I did not have 
> this problem on the same machine. 
> Do you familiar with this problem? Thanks.
> Pavel
>