Internal Server Error when trying to request channels from Best Of You Tube

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Get list of categories from Guide Categories
https://developers.google.com/youtube/v3/docs/guideCategories/list
GET 
https://www.googleapis.com/youtube/v3/guideCategories?part=snippet&hl=en&regionC
ode=US&fields=items(id%2Csnippet(title))
Response
200 OK
- Show headers -
{
"items": [
{
"id": "GCQmVzdCBvZiBZb3VUdWJl",
"snippet": {
"title": "Best of YouTube"
}
},
[...snip...]

2. Copy id from output and paste into Channels query
https://developers.google.com/apis-explorer/#p/youtube/v3/youtube.channels.list
GET 
https://www.googleapis.com/youtube/v3/channels?part=snippet&categoryId=GCQmVzdCB
vZiBZb3VUdWJl&maxResults=50&fields=items(id%2Csnippet(title))
Response
500 Internal Server Error
- Show headers -
{
"error": {
"code": 500,
"message": null
}
}

What version of the product are you using? On what operating system?
YouTube v3 Data API
Windows 7 Enterprise (64 bit)

Original issue reported on code.google.com by jeffory....@delphi.com on 24 Nov 2014 at 12:45

[GoogleCodeExporter]

Other Guide Categories, such as Paid Channels GCUGFpZCBDaGFubmVscw and Film & 
Entertainment GCRmlsbSAmIEVudGVydGFpbm1lbnQ are working 

Original comment by jeffory....@delphi.com on 24 Nov 2014 at 12:47