Dear Sir,
if i type the following :

sdscatter(a)

PRSD Toolbox Lite 2.0.5 (22-Dec-2009), Copyright (C) 2007-2009, PR Sys Design, All rights reserved
Only for non-commercial use.

Error checking out license: License has expired (-3)
??? Error using ==> prsd_mex
PRSD License Error

Error in ==> D:\PARK\soft\PRSD_Studio_Lite_2.0.5_23Dec09_M74\PRTools\sdscatter.p>sdscatter at 40
how to update the license???

Dear Park,

the latest PRSD Studio Lite 2.2.3 (29-jul-2010) was missing the license file in the distribution. It is now corrected. You may follow the link in your download e-mail from yesterday and re-download the distribution.

Also, please remove the older PRSD Studio directories from your Matlab path using File/Set Path menu command to avoid fallback to older releases.

Thank you for reporting this problem.

With Kind Regards,

Pavel

edit: moved to PRSD Studio forum