Error 106 Keyed file error (Bad key block hdr) program SY_batchmanager_bus.pvc

I need help!!!  I was posting an invoice and this error came up.  I have rebuild sort and key and analyzed but every time I try to post any invoice, it gives me the same error.  I am still on version 4.3.1.7281

Last channel opened 32692. 

Last channel accessed 32732

Last file name: \AP_invoice restart.m4t

I hope this helps.  

Thanks,

Alex