In reply to benjj2000:
>All instructions were obeyed!
As mentioned above I would guess you used too much for what the jacket needed. I discovered long ago, the recommended quantity was far too much for my gear.
For all nikwax reproofers I only use a third of the recommendation max, sometimes less depending on whether the old proofing was stripped out, etc. Why I've no idea - combo of washing machine, water quantity, water hardness, etc. ??
Plain water rinsing by itself will not now strip the proofer out btw.