Error importing content pack, please ensure it is a valid JSON file. Check your Graylog logs for more information.

[Tuumke]

Graylog 2.4.5+8e18e6a
Cant import content pack.

[pbohlin]

Same problem
v2.4.6+ceaa7e4

[jameslee007]

Same problem here.
Graylog Version 2.4.6

[mwallau]

Same here, unfortunately.
Graylog 2.4.6+ceaa7e4

Any suggestions on how to edit the json manually so that it works with Graylog 2.4.x ?

[alexiusflavius]

Appears that issue is still around
Graylog 2.5.1+34194da

[Snowman-25]

Also happens with Graylog 3.0.0-rc.1+f41986c

[andryukha]

Please fix!
Cant import into Graylog 3.0.0+db6cf59 with the same error.