What does your debug.log say?
Any hints there?
Database errors.
************************
EXCEPTION: 11DbException
Db::put: Not enough space
C:\Program Files (x86)\Aricoin\aricoin-qt.exe in ProcessMessages()
ProcessMessage(block, 1025 bytes) FAILED
received block 956a473756422048132b
Postponing 5308 reconnects
REORGANIZE
REORGANIZE: Disconnect 1268 blocks; 782b0ca0d1737dac1478..a58aec2f21f613239e5c
REORGANIZE: Connect 2983 blocks; 782b0ca0d1737dac1478..64a80e7867ffb1227391
connection timeout
connection timeout
trying connection 193.107.92.193:16567 lastseen=1103.3hrs
************************
EXCEPTION: 11DbException
Db::put: Not enough space
C:\Program Files (x86)\Aricoin\aricoin-qt.exe in ProcessMessages()
ProcessMessage(block, 228 bytes) FAILED
received block 5a8b95ea0f531eeef867
Postponing 5309 reconnects
REORGANIZE
REORGANIZE: Disconnect 1268 blocks; 782b0ca0d1737dac1478..a58aec2f21f613239e5c
REORGANIZE: Connect 2983 blocks; 782b0ca0d1737dac1478..64a80e7867ffb1227391
connection timeout
trying connection 80.227.149.58:16567 lastseen=1049.2hrs
************************
EXCEPTION: 11DbException
Db::put: Not enough space
C:\Program Files (x86)\Aricoin\aricoin-qt.exe in ProcessMessages()
ProcessMessage(block, 228 bytes) FAILED
received block 78294ab8fc1c378198bc
Postponing 5310 reconnects
REORGANIZE
REORGANIZE: Disconnect 1268 blocks; 782b0ca0d1737dac1478..a58aec2f21f613239e5c
REORGANIZE: Connect 2983 blocks; 782b0ca0d1737dac1478..64a80e7867ffb1227391
connection timeout
trying connection 188.162.167.4:16567 lastseen=1337.4hrs
************************
EXCEPTION: 11DbException
Db::put: Not enough space
C:\Program Files (x86)\Aricoin\aricoin-qt.exe in ProcessMessages()
ProcessMessage(block, 241 bytes) FAILED
received block b44dd040474cc2550701
Postponing 5311 reconnects
REORGANIZE
REORGANIZE: Disconnect 1268 blocks; 782b0ca0d1737dac1478..a58aec2f21f613239e5c
REORGANIZE: Connect 2983 blocks; 782b0ca0d1737dac1478..64a80e7867ffb1227391