I had no problems with the carving or crumb coating (used ganache by the way) I made sure the cake was thoroughly chilled before applying the fondant, but every cake began leaning and slouching and cracking apart after the fondant was applied. I used the durable 3D cake for carving recipe but I don't think the recipe was strong enough. I live at 4600 feet, so maybe the higher altitude was the culprit. I don't know!
I've never had so many problems and now I'm nervous about making and new cakes at all! I kind of want to quit the whole cake making thing for a while!
We ended up going to Costco and buying a cake.... I did put the cute little gum paste daisies I'd made on top, but that was little consolation. Topsy turvy..... oh how I hate you!