[Pw_forum] Weird error ?

[Hong, SamPyo]

Hello, dear PWSCF users,

I have a strange problem looking more than weird...
As you see below, it seems that I compiled successfully the latest
version of PWSCF because I didn't have any error. However, as I run the
executable, I get the message below:

>tund:~/pwscf.2.1.2bin/pw.x
>bin/pw.x: Command not found.

Without doubt, there exist pw.x in the directory. For example,
>tund:~/pwscf.2.1.2ls -l PW/pw.x
>-rwxr-xr-x    1 sampyo   mkw       6618408 Jan 24 23:34 PW/pw.x*

How could this happen? 

Take my best regards,

Sampyo