need advice! being blamed for leak
hi all, i am new to the boards and hope you can offer some advice.
we recently moved into a co-op which we renovated. we installed new kitchen cabinets and appliances without touching anything behind the walls. we've been living here for about 3 months without any problems in the kitchen. the super had informed us that our neighbor below complained of hearing water flush one night and waking up to a leak in the cabinets above her sink. upon examining our apartment, the super said the building management is out of it because we replaced the p-trap, which connects the sink to the main water supply/waste. on the other side of this wall is a bathroom which we are currently working on. the walls are taken down (we are putting up new sheet rock) and the pipes are exposed...everything is bone dry. again, we haven't had any leaks or problems but we are being blamed. the super informed us that our tenant may choose to sue us.
any advice is appreciated! thanks in advance!