Can you post some output from your splunkd.log on that server? I know it's not possible to post the entire log here but some of the messages you are seeing in and around the ERROR might be helpful to better understand what might be going on and what direction to point you in.
My splunk version is 6.1.1. Here's some of the log content for your reference.
Access violation, cannot read at address [0x00000000xxxxxxx]
Exception address: [0x00000xxxxxxxxxx]
Crashing thread: MainTailingThread