**BUG**
Concise problem statement:
Can no longer attach a subckt to a spice symbol using **Miscellaneous > Edit subckt...**.
Can paste in a subckt and save symbol after `Update subckt ok!` message but once symbol is closed and reopened, doing **Miscellaneous > Edit subckt...** again shows no subckt in dialogue box.
Steps to reproduce bug:
1. Open Spice symbol for editing (for example, new symbol, CD4093EE);
2. Do **Miscellaneous > Edit subckt...** and paste subckt of same name as symbol (CD4093EE) into **Attach a spice subckt to this symbol** box;
3. Click **OK**;
4. Observe `Update subckt ok!` message;
5. Save spice symbol;
6. Close symbol;
7. Reopen symbol;
8. Do **Miscellaneous > Edit subckt...**
Results:
**Attach a spice subckt to this symbol** is empty.
Expected results:
**Attach a spice subckt to this symbol** should contain the previously posted subckt.
Browser:
Chrome in W7 Pro
Firefox in Kubuntu 12.04 LTS.
Brand new interactions and interfaces. 
Easy to use and quick to get started. 
