Lost SNMP and routeros reporting in DUDE after upgrade

RouterOS General
1

Hi,

Upgraded an RB450 to 5.8. Now dude cannot read any SNMP info. have checked SNMP is activated. was working fine before upgrade. any ideas?
Dude ver4.0beta3.

2

Its working in My DUDE, double check community, mode

3

everything correct as far I can see. ver1 public, no security. both ends.