Problems with initializing parallel computing

Hi, I was trying to initialize parallel computing by issuing command 'parpool', but I received the following errors. Does anyone know why this is happening? Thank you very much.

Warning: matlabpool will be removed in a future release.
Use parpool instead. 
Starting matlabpool using the 'local' profile ... Warning: Unable to calculate the dependencies of the files:
  distcomp.nop

because:
Cannot CD to C:\Users\Lab\AppData\Local\Temp (Name is nonexistent or not a
directory). 
> In AttachedFiles>AttachedFiles.calculateAttachedFiles at 221
  In Task.Task>Task.hCalculateDependentFiles at 535
  In Task.Task>Task.hCalculateAndCacheDependentFiles at 554
  In Job.Job>@(t)t.hCalculateAndCacheDependentFiles(taskFunctionCache) at 686
  In Job.Job>Job.attachRequiredFiles at 685
  In Job.Job>Job.submit at 300
  In InteractiveClient>InteractiveClient.start at 328
  In Pool.Pool>iStartClient at 537
  In Pool.Pool>Pool.hBuildPool at 434
  In MatlabpoolHelper>MatlabpoolHelper.doOpen at 329
  In MatlabpoolHelper>MatlabpoolHelper.doMatlabpool at 129
  In matlabpool at 142 

Error using matlabpool (line 148)
Failed to start a parallel pool. (For information in addition to the causing error,
validate the profile 'local' in the Cluster Profile Manager.)

Caused by:
    Error using parallel.internal.pool.InteractiveClient/start (line 330)
    Failed to start pool.
        Error using cd
        Cannot CD to C:\Users\Lab\AppData\Local\Temp (Name is nonexistent or not a
        directory).

[Geoff Hayes]

What happens if you create the directory C:\Users\Lab\AppData\Local\Temp?

[Edric Ellis]

Also, what do you get if you run the following:

tempdir
exist(tempdir, 'dir')

[Antonio Abel]

Hi, I had a similar issue with a "Warning: Unable to calculate the dependencies of the files". When I run the lines explained by Edric Ellis (tempdir // exist(tempdir, 'dir' // see above), I see the following error : Error using cd Cannot CD to C:\Users\XXXX\AppData\Local\Temp; C:\Program Files\PCL 1.6.0\bin (Name is nonexistent or not a directory). Error in tempdir (line 30) curr_dir = cd(tmp_dir);

Any help will be very welcomed,

thanks in advance

Antonio

[Greg]

It definitely sounds like you have a problem with your temp directory. I can't imagine how many things would go horribly wrong in Windows if it got completely deleted... Is the username accurate, and are your folder permissions accurate?

On a different note, I recommend "isdir(tempdir);" rather than the exist function. It's a little more readable, and I've always preferred actual Boolean return values.

[Walter Roberson]

tempdir() looks at the environment variables TEMP and TMP (in that order.) It appears that somehow you have modified the environment variable to include two directory names, or else that your environment variables have been incorrectly configured. Notice that it complains about not being able to cd to

C:\Users\XXXX\AppData\Local\Temp; C:\Program Files\PCL 1.6.0\bin

which obviously intended to be a pair of directory names. The TEMP and TMP environment variables are, however, not designed to be able to list multiple directories.

You should look at

getenv('TEMP')
getenv('TMP')

to see which one is wrong, and you should example your Windows environment variables; see for example http://www.computerhope.com/issues/ch000549.htm