无法创建工作精灵

我无法为我的应用程序的这个区域创建一个工作的动画精灵。

这是名字 mainCharacter.png . 我有一个双倍大小的版本叫做 mainCharacter@2x.png .

local playerSheetOptions =
{
    width = 50,
    height = 50,
    numFrames = 17,
    sheetContentWidth = 500,
    sheetContentHeight = 100
}
local playerSequences = {
    {
        name = "idle",
        start = 1,
        count = 12,
        time = 1200,
        loopCount = 0,
        loopDirection = "bounce"
    },
    {
        name = "jump",
        start = 13,
        count = 5,
        time = 600,
        loopCount = 1
    },
}
local playerSheet = graphics.newImageSheet( "resource/images/mainCharacter.png", playerSheetOptions )
local player = display.newSprite(gameSheet, playerSheet, playerSequences)

display.newSprite() requires argument #2 to a table containing sequence data

如果我 print

print(gameSheet)
print(playerSheet)
print(playerSequences)

我得到:

14:27:05.703  userdata: 12445228
14:27:05.703  userdata: 0CF42600
14:27:05.703  table: 0CF41FD0

我哪里做错了?我已经试着简化了很多序列,但仍然得到了同样的结果。