Someone else was going to be the CPA for this entity (I assume the other GPs CPA, but in the end it doesn't matter)   But, whoever he thought was going to do it, it fell through and then he asked me in early March.  At that point, I told him I would put it on extension.  As I cut off on taking returns on 3/5 that are due 3/15 and this was after that

The only reason I "blame" the lawyer is he asked the lawyer.  The lawyer could have said you need to speak to a CPA about that, rather than just say nothing extra needed to be done.