求生之路2怎么建图，根本建不了

] Map bp_mapalpha1 coop
CModelLoader::Map_IsValid: No such map 'maps/bp_mapalpha1.bsp'
map load failed: bp_mapalpha1 not found or invalid
KV Conditional: Unknown symbol DLC1_INSTALLED
KV Conditional: Unknown symbol DLC1_INSTALLED
KV Conditional: Unknown symbol DLC1_INSTALLED
KV Conditional: Unknown symbol DLC1_INSTALLED
KV Conditional: Unknown symbol DLC1_INSTALLED
KV Conditional: Unknown symbol DLC1_INSTALLED
KV Conditional: Unknown symbol DLC1_INSTALLED
KV Conditional: Unknown symbol DLC1_INSTALLED
输进去就这样根本建不了图

1. 保证刚刚进入游戏的时候没有出现任何错误指示
2. 保证游戏的版本较新，最好是2.1.3.6
3. 保证地图资源放在指定位置
4. 打开控制台输入“map+空格”，用上下键选择出你所需要的地图，进行游戏
希望我的建议可以解决您的问题

进入游戏，按~打开控制台，输入地图代码：

毫不留情 map l4d_hospital01_apartment(1.公寓) map l4d_hospital02_subway (2：地铁) map l4d_hospital03_sewers(3：下水道) map l4d_hospital04_interior(4：医院) map l4d_hospital05_rooftop(5：屋顶终局) 死亡丧钟 map l4d_smalltown01_caves(1：收费公路) map l4d_smalltown02_drainage (2：水沟) map l4d_smalltown03_ranchhouse(3：教堂) map l4d_smalltown04_mainstreet (4：小镇) map l4d_smalltown05_houseboat(5：船库终局) 静寂时分 map l4d_airport01_greenhouse (1：花房) map l4d_airport02_offices(2：起重机) map l4d_airport03_garage(3：建筑工地) map l4d_airport04_terminal (4：终点) map l4d_airport05_runway(5：跑道终局) 血腥收获 map l4d_farm01_hilltop(1：森林) map l4d_farm02_traintunnel(2：隧道) map l4d_farm03_bridge(3：桥) map l4d_farm04_barn (4：火车站) map l4d_farm05_cornfield(5：农舍终局) 选一个输入按回车即可完成创建！