create LVDS_TX don't work...

Altera io contain either input lvds receivers or output lvds transmitters but not both together (unless they change their mind).

Your post is not clear but you may exclude the io issue by making sure your rx /tx are assigned to correct pins.

I use quartus ii 10.1sp1 web version

1. Run Menu-tools MegaWizard Plug-In Manager ..

2. MegaWizard Plug-In Manager .. page1 create a new ..... next

3. MegaWizard Plug-In Manager .. page2a

choice I/O => ALTLVDT_TX.. Verilog .. File Location/Name ..... next

4. i see "Loading MegaWizard .... " to about 80%

then ... gone

that's All I see.....