Guiminer is basically the same just more user interface friendly but believe me it also fails if you enter wrong parameters or config is wrong or something is wrong, i did solomine before, i dont know what is going on, i tried to use the simplest cgminer settings without all those flags that I usually do but for this particular coin I simply can get it going solomining it! I just can set it up to pool mine! You think it might be something to do with the wallet?