Redis Error: Expecting Prefix '$' or ':'

[ahmetb]

I'm consistently getting this error from Windows Azure Redis Cache (running v2.8.12 ) on simple GET/SET operations.

Here's server info:

rollercoaster.redis.cache.windows.net:6379> info
# Server
redis_version:2.8.12
redis_git_sha1:6401849
redis_git_dirty:0
redis_build_id:58e765299a8a5ae4
redis_mode:standalone
os:Windows
arch_bits:64
multiplexing_api:winsock_IOCP
gcc_version:0.0.0
process_id:1324
run_id:bdc9e7aa3f75b31e6851d7b318404df9dd580577
tcp_port:10226
uptime_in_seconds:1128
uptime_in_days:0
hz:10
lru_clock:15704668
config_file:C:\Resources\directory\cec74e3c29454ab8aa2abafdc90578c1.Kernel.localStore\1\redis_712_port10226.conf

# Clients
connected_clients:5
client_longest_output_list:0
client_biggest_input_buf:0
client_total_writes_outstanding:0
client_total_sent_bytes_outstanding:0
blocked_clients:0

# Memory
used_memory:138207840
used_memory_human:131.81M
used_memory_rss:201326592
used_memory_rss_human:192.00M
used_memory_peak:138239592
used_memory_peak_human:131.84M
used_memory_lua:33792
mem_fragmentation_ratio:1.46
mem_allocator:dlmalloc-2.8

# Persistence
loading:0
rdb_changes_since_last_save:3
rdb_bgsave_in_progress:0
rdb_last_save_time:1408212488
rdb_last_bgsave_status:ok
rdb_last_bgsave_time_sec:1
rdb_current_bgsave_time_sec:-1
aof_enabled:0
aof_rewrite_in_progress:0
aof_rewrite_scheduled:0
aof_last_rewrite_time_sec:-1
aof_current_rewrite_time_sec:-1
aof_last_bgrewrite_status:ok
aof_last_write_status:ok

# Stats
total_connections_received:290
total_commands_processed:1351
instantaneous_ops_per_sec:0
rejected_connections:0
sync_full:1
sync_partial_ok:0
sync_partial_err:0
expired_keys:0
evicted_keys:0
keyspace_hits:0
keyspace_misses:0
pubsub_channels:0
pubsub_patterns:0
latest_fork_usec:10077

# Replication
role:master
connected_slaves:1
slave0:ip=100.69.98.41,port=10226,state=online,offset=1638,lag=1
master_repl_offset:1638
repl_backlog_active:1
repl_backlog_size:104857600
repl_backlog_first_byte_offset:2
repl_backlog_histlen:1637

# CPU
used_cpu_sys:0.13
used_cpu_user:0.08
used_cpu_sys_children:0.00
used_cpu_user_children:0.00

# Keyspace
db0:keys=1,expires=0,avg_ttl=0