A collection of trouble-shooting steps.

Java Heap Problem

When loading or saving large XML files, MATLAB sometimes reports problems due to insufficient heap memory for the Java Virtual Machine.

Since MATLAB version 2010a can you increase the the heap space for the Java VM in the preferences.
You can change the java heap size by using the General Preferences dialog.

LTPDA Directory Name

Problems have been seen on Windows machines if the LTPDA toolbox directory name contains '.'. In this case, just rename the base LTPDA directory before adding it to the MATLAB path.

Problems to execute MEX files

User with the operating system "Windows XP" will get trouble if you want to execute MEX files. This happens if you are useing for example the methods 'detrend', 'smoother', 'lpsd', ...
You will get the following error:

??? Invalid MEX-file 'C:\ltpda_toolbox\ltpda\src\ltpda_dft\ltpda_dft.mexw32':
This application has failed to start because the application configuration is incorrect.
Reinstalling the application may fix this problem.
You can solve this problem by installing the Microsoft Visual C++ 2008 Redistributable Package. This is necessary because all the MEX files are compiled with Microsoft Visual C++ 2008. You can install this package from the LTPDA toolbox or from the official Microsoft web page.

User with a Ubuntu 12.04 LTS OS may have problems to open external links because Firefox needs a much newer libstdc++ library as MATLAB delivers. You can check if this workaround apply to you by typing "!firefox &" in the command window. The should you get the following error massage:

>> !firefox &
XPCOMGlueLoad error for file /usr/lib/firefox/ cannot open shared object file: No such file or directory
Couldn't load XPCOM.
firefox: Signal 127
If so then should you use the system libstdc++ library instead of MATLAB's libstdc++ library.

This can be done by performing the following steps:
  1. Identify the location of MATLAB's libstdc++ library path.
    You can do this with the linux command "locate -i". MATLAB 2012a habe two libstdc++ libraries (older MATLAB versions have only one libstdc++ library) and the path are:
    where $MATLABROOT is the installation path of your MATLAB (e.g. /usr/local/MATLAB/R2012a) and $ARCH is the architecture corresponds to yours OS (e.g. glnxa64 ).
  2. Move MATLAB's libstdc++ library to a backup folder.
    Use the following command in a ubuntu terminal.
    cd $MATLABROOT/sys/os/$ARCH
    sudo mkdir old
    sudo mv libstdc++* old/
    You should do the steps above for all libstdc++ libraries you find on MATLAB installation path.

MATLAB unresponsive when using doc or web on some Macintosh systems

On some MacOS systems, the call to MATLAB's doc or web (that happen after clicking on the 'Parameters description' link in the help of methods or in call to the methods called toHtml) may lead to MATLAB being stuck. This issue is associated to the "Enable Access for Assistive Devices" setting. Details and proposed solutions are described here:

Mathworks support

Java 7 UnknownHostException

Java 7 throws an error to get the local host information. The error occures with the following command:

>> a = ao(1)
Error using provenance (line 51)
Java exception occurred: your-machine-name: your-machine-name: nodename nor servname provided, or not known
Caused by: your-machine-name: nodename nor servname provided, or not known
at Method)
The workaround is to add the name of the machine to your ‘/etc/hosts’ file. For example add the following line    your-machine-name

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