Oh dear, when I read the title I thought you'd suddenly canceled the project or something! That's very strong wording for a simple delay! >_>
It feels awful to delay a build when you were so sure you could release it in time (trust me, I've been there), but don't beat yourself too hard over it: you're still going to work hard to release it as soon as possible, and your fans will still be here waiting until the day you do, supporting you throughout.
Delays and setbacks are not uncommon for small developers like us, and our fans (well, the vast majority of them, at least) are very understanding of this fact: as long as you promptly communicate any issues you're having with your community and keep doing your best despite them, you're going to do great, fren. ^w^