Server Runtime Error

[Silreath]

While loading, my blockland freezes up and displays the error message:
"Server Runtime error!
Program: C:\Users\(Me)\Documents\Blockland\Blockland.exe
This application has requested the runtime to terminate it in an unusual way."
I've already searched everywhere, and I've tried deleting my cache.db. It doesn't work.
It was working fine earlier today.
Heres my console log:

[Ad Bot]

[Netherwolf]

*** CREATING MISSION
*** Stage 1 create
486 environmental resource files found
Regenerating file manifest
Error reading PNG file:
 IDAT: CRC error


Taken from your Console Log.

I know nothing about this matter, but this could shorten the search of what happened. This is at the VERY end of the Console. So, last entry until it crashed I guess? Is it possible the IDAT: CRC Error triggered the Runtime error?