What's wrong with my file?

I dont understand why the AC source can not connect with the line that have capacitor element?http://www.mediafire.com/download/xbtp75en66beryc/manybus.mdl

[Stephen23]

@Vinh Tran: Do not put links to external file storage, as these are not trusted by most users here. If you have a MATLAB file then upload it here using the paperclip button, then both the Choose file and Attach file buttons.

[Vinh Tran]

@Stephen Cobeldick: ok, this my file, can you help me?