I read xlsfiles by opening my own ActiveX-Server for a while. Suddenly I got the error:
After a while I checked the taskmgr and saw that there was still an Excel-task. After killing it the error was gone... happened that because of a breakpoint I did not stop the ActiveX-Server which caused some problems...
10 Oct 2013
increases speed of xlswrite function when used in loops or multiple times.
Author: Matt Swartz