Unable to save datasource in cacti 0.8.7g

[patel1678]

Dear All,
I have installed cacti 0.8.7g and imported following sql file from running cacti version 0.8.7e
1) Have taken back up from running cacti 0.8.7e mysql database with following comand
mysqldump -u cactiuser -pcactiuser cacti > dump.sql

2) Have installed cacti 0.8.7g and imported dump.sql
mysql -u cactiuser -pcactiuser cacti < dump.sql

Then created all graphs for all device and its working fine except for one graph because I am unable to create datasource for that. The data Input Method for this graph is based on perl script output data and able to create datainput method.
While creating datasource have got error as per the screen shot attached.

Please help me with command/ configuration to resolve this issue.