When trying to send a message with a large file attachment Softalk Organizer appears to lock up. Smaller attachments can be sent without any problem.
IIS imposes a limit on the size of files that can be posted back. The default for this limit is about 4Mb.
To increase this limit to 25Mb, add the following information to the web.config file, which can be found in the softalkorganizer folder. By default this is C:InetpubwwwrootSoftalkOrganizer. Edit the file in Notepad and locate the line with
</compilation>. Add the new information after this line, as follows:-
<httpRuntime maxRequestLength = "25000" />