Currently (but not usually), if you call the following url you get an internal server error: https://api.linkedin.com/v1/people/~/connections:(id,headline,picture-url,summary,first-name,last-name,formatted-name,location:(name),industry,positions,num-connections,num-connections-capped,api-standard-profile-request:(url,headers),public-profile-url)?format=json
Remove the public-profile-url and call the following url, it works: https://api.linkedin.com/v1/people/~/connections:(id,headline,picture-url,summary,first-name,last-name,formatted-name,location:(name),industry,positions,num-connections,num-connections-capped,api-standard-profile-request:(url,headers))?format=json
Why?