You might be missing the path of the qmsedx.exe as well.
Avoid using spaces in the task name.
For your understanding...
EXECUTE cmd.exe /c "D:\Project_EDX\QVD\EDX\EXE\qmsedx.exe -task=Transform_Extract.qvw -qms=http://<ServerIP>:<Port>/QMS/Service -password="
About the task name, you should start from the root folder just like I have given folder path for qmsedx.exe above.
Please update if it still fails after doing all the above.
.\Qlikview_edx\qmsedx -task="Reload of application.qvw" -qms=http://myserver:4799/QMS/Service -password=mypassword -verbosity=5 -to=3600
it works flawlessly with all the "Reload of" of Applications which are on the root of the documents folder