help needed to recover damage project

this one's got me. I am unable to open a project i saved last week. I've disabled scanning VST on startup (Sonar v8.5 itself opens fine) I hold shift when i open and even when not loading any plugins it stalls at 40% opening. unless i'm mistaken, I recall there are a couple of ways to open a bad project, one is holding down shift when opening but i dont know of any others. Any advice appreciate, thanks all

thanks for the reply. its mainly WAV data with the typical plugins and some V vocal stuff but has midi data and softsynths too. weirdly i walked away from the PC and it opened after about 20minutes so i immediately saved as a new file name and again it stalled at 40% upon saving. it also seemed i had some hidden audiosnap markers enabled that prevented me from saving the project as a bundle. Once i managed to disable all audiosnap data the file saved and opened fine, normal and in bundle format. strange as i have never used audiosnap, ever! (perhaps i unknowingly enabled it somewhere?)

i only saved as a bundle so i had an emergency backup whilst i tried to fix the issue. its rare that i use bundles, unless i'm having a dabble on another PC. ive never been a fan of the "auto save" feature and regularly hit the save button (past experience learnt the hard way) Might be a good idea to perhaps make daily saves under a different name then? cheers for the tips!