I made an astable multivibrator following an example online. When I set it up initially it works fine but if I save and return to the circuit it does not work unless I remove a component and replace it.

Here is a link to the circuit like the one I copied (see below). To reproduce the error, make a working circuit (LEDs should blink alternating) then exit to iCircuit's main menu and return to the same circuit. It no longer functions the same way. Now cut one of the capacitors and paste it back in. The circuit will work again as intended.

http://electronics.stackexchange.com/questions/12283/how-does-an-astable-multivibrator-led-blinking-circuit-work