Version 3.0 changed a lot of object names, if you are trying
to run the V2 input file in a later version, you need to transition your
file to that version. You can download the transition files from
the helpdesk
(
http://energyplus.helpserve.com) and put them into the
MultipleTransition folder. Then execute IDF Converter utility to
transition the file.
Does the EP-Launch say "batch file cannot be created" or
"temporary files cannot be created"? If really the latter
and you are running on Vista or Windows 7, a hint:
EnergyPlus has no problems running on Vista computers if it is run
directly by executing the EnergyPlus.exe file assuming you have prepared
the in.idf and in.epw files at the same folder. There were some issues
running earlier versions of EP-Launch, but most have been fixed for the
latest version of EP-Launch.
If EnergyPlus was installed at a user folder like C:\EnergyPlusV3-0-0,
there should be no problems running EP-Launch. If EnergyPlus was
installed at a windows system folder like ?C:\Program
Files\EnergyPlusV3-0-0?, you have to run EP-Launch every time with
administrator rights by right clicking the EP-Launch.exe file and choose
?Run as Administrator?.
Another way is to create a shortcut to EPLaunch and change settings
appropriately.
If it is "batch files cannot be created", use the options menu
in EP-Launch to turn off "create batch files" -- it's on the
Options, Miscellaneous tab, uncheck "Create batch files to run
EnergyPlus"