Weathermap editor display issue

[wtz]

Hi, I am using the cacti weathermap plugin version 0.97a.
I am used to create new maps etc..

But, This time I encounter a new issue to me:

I created i bigger map then usual ( with lots of nodes and links ) and all working good till:

I created a node and when the editor refreshed the editor did not show the map anymore. So I removed manually the node created in the config file and it was back.
I deleted some nodes and link and I was able to create new one ( a few ) . then again the editor does not show the map ( like there is a limit ).

On the other hand, the map shows perfectly up outside the "editor".

I checked the cacti.log and nothing relevant there.

is there any limits for the editor to show the map ? ( with lots of nodes and links )..

Another example is, if i remove the background png, it does show up in the editor and as soon as i add a new link or node .. the editor does not display the map anymore..

Is there anyone that had this issue or anyone whom could help me ?

Thank you very much in advance

Best regards