No RRA's after upgrade????

[BChirhart]

I recently upgraded from 8.1 to 8.3 and now I have no RRA's listed. Also when I try to save a datasource, I get the errors:

Warning: implode() [function.implode]: Bad arguments. in C:\Program Files\Apache Group\Apache2\htdocs\cacti\include\snmp_functions.php on line 51

Warning: Cannot modify header information - headers already sent by (output started at C:\Program Files\Apache Group\Apache2\htdocs\cacti\include\snmp_functions.php:51) in C:\Program Files\Apache Group\Apache2\htdocs\cacti\data_sources.php on line 257

(begin shameful begging)
Please, please help - Cacti is quite broken and I can not get it up and running again!!!
(end shame)
Thanks -