From: Andy on
> Any piece of code
> eg. "john = xlsread('johndata.xls');" (this would leave one instance of "EXCEL.EXE" running in the taskbar; if there were to be three xlsread functions there would be 3 "EXCEL.EXE"s in the taskbar
>
> Currently on Matlab R2008b on Windows Xp Professional. Using Excel 2003.
>
> Thanks for any help


Also using MATLAB R2008b, Windows XP Professional, and Excel 2003, I cannot duplicate this error:

>> john = xlsread('johndata.xls'); % johndata contains random data for me
>> e=actxGetRunningServer('excel.application')
??? Error using ==> actxGetRunningServer
The server 'excel.application' is not running on this system.

The task manager shows no running Excel application, and actxGetRunningServer can find no running Excel instance. Is there something you're not telling us about johndata? Or perhaps your xlsread has been edited? Or perhaps your Excel has become corrupt?

Try this with a brand new worksheet containing meaningless data to make sure there's not something going on with some macro in Excel. If the problem persists, you should contact technical support.
From: Neil Stewart on
"Andy " <myfakeemailaddress(a)gmail.com> wrote in message <i3eijs$jdu$1(a)fred.mathworks.com>...
> > Any piece of code
> > eg. "john = xlsread('johndata.xls');" (this would leave one instance of "EXCEL.EXE" running in the taskbar; if there were to be three xlsread functions there would be 3 "EXCEL.EXE"s in the taskbar
> >
> > Currently on Matlab R2008b on Windows Xp Professional. Using Excel 2003.
> >
> > Thanks for any help
>
>
> Also using MATLAB R2008b, Windows XP Professional, and Excel 2003, I cannot duplicate this error:
>
> >> john = xlsread('johndata.xls'); % johndata contains random data for me
> >> e=actxGetRunningServer('excel.application')
> ??? Error using ==> actxGetRunningServer
> The server 'excel.application' is not running on this system.
>
> The task manager shows no running Excel application, and actxGetRunningServer can find no running Excel instance. Is there something you're not telling us about johndata? Or perhaps your xlsread has been edited? Or perhaps your Excel has become corrupt?
>
> Try this with a brand new worksheet containing meaningless data to make sure there's not something going on with some macro in Excel. If the problem persists, you should contact technical support.

It still happens on a completely arbitrary worksheet calling an excel file made from scratch with no macros. It's just a bit of a nuisance, really.
From: Andy on
Then I would contact tech support. (Even if it is just a nuisance, there may be something wrong under the hood which could cause real errors.)