Slang asked for help replicating. Here is my simplest replication scenario. This was also posted to ecco_pro:
 
>On 1 Feb 2008 slangmgh said...
>
>>I cannot duplicate the error, could you give me detail steps to  
>>produce the problem with a clean environment, thanks.
 
Here are my simplest steps to reproducing this bug:
 
0) Configure an Ecco Workgroup Environment if not already done
   (If you need help doing this, please ask)
   Essentially, you should be able to use File->Open Shared and File->Share and it works ok.
 
1) File->New
    (No need to add anything; the sample data that's there is fine)
 
2) File->Share
    (Make it an "other shared file", make all notepads public, give it a name)
 
3) File->Save As
    (This creates a replica on your own machine, so you are able to use the file whether online or offline)
 
4) File->Open and open the local file from #3
   (You should be "online" with the file now)
 
5) Close Ecco/EccoExt completely. (The bug most easily shows up
   the first time you open Ecco)
 
6) Open Ecco
 
7) Open the local shared file copy. Same as step #4. Again, you should be online with your replica...
 
8) (You should be in a notepad) Go to the blank line at the end of the notepad. Type "Test" and press <enter>
 
==> I get Bad Scheduling Channel here
 
==> I will randomly (?) get it at other times, but this is 100% repeatable for me. Repeat steps 5-8 again to see it again.
 
IMPORTANT: I have traced the network accesses at the packet level, and it is NOT a firewall or bad-packet issue. There is nothing wrong (that I can see) with the interaction. I don't know the packet details, so could be missing something of course...
 
I hope this helps!
Pete