Flow Control plugin disabled Sel Blocks plugin

Hi,

Has anyone else had this issue: 
I've been using the forXml feature of Sel Blocks and it was working fine until I added the Flow Control plugin.

Now I get the following error:
[error] Unexpected Exception: TypeError: callStack is undefined. fileName -> chrome://selblocks/content/extensions/sel-blocks.js?1378750390854, lineNumber -> 536, columnNumber -> 6

When I disable Flow Control, Sel Blocks works again.  When I enable Flow Control again, Sel Blocks then gets the error.  

I would like to have the functionality of both plugins.  Any ideas?

Thanks.

Get rid of the flow control plugin and use a user-extensions.js file for it. Hopefully that does it.

Thanks.