You can clone with
HTTPS or Subversion.
I'm using your example (http://www.flotcharts.org/flot/examples/canvas/index.html) so I'm sure that there are no errors on code :)
I tried also to modify your code using flashcanvas, but I receive another error...
IE 7/8 canvas functionality will be supported?
Thank you very much,
This is due to the issue described in #991. We've applied a patch and updated the examples on the web to include it. Thanks for reporting this!