ah ha, that was it ... good call.

Msg 8928, Level 16, State 1, Line 1

Object ID 1419152101, index ID 5, partition ID 72057594157858816, alloc unit ID 72057594172669952 (type In-row data): Page (1:17819) could not be processed. See other errors for details.

Msg 8939, Level 16, State 98, Line 1

Table error: Object ID 1419152101, index ID 5, partition ID 72057594157858816, alloc unit ID 72057594172669952 (type In-row data), page (1:17819). Test (IS_OFF (BUF_IOERR, pBUF->bstat)) failed. Values are 12716041 and -4.

Msg 8928, Level 16, State 1, Line 1

Object ID 1419152101, index ID 5, partition ID 72057594157858816, alloc unit ID 72057594172669952 (type In-row data): Page (1:17851) could not be processed. See other errors for details.

Msg 8939, Level 16, State 98, Line 1

Table error: Object ID 1419152101, index ID 5, partition ID 72057594157858816, alloc unit ID 72057594172669952 (type In-row data), page (1:17851). Test (IS_OFF (BUF_IOERR, pBUF->bstat)) failed. Values are 29493257 and -4.

Rebuilt my indexes and all is well.

Thanks