There is an issue in Blockland where if a script function returns a string larger than 4096 characters it can cause memory corruption that will lead to random failures. If you have many add-ons installed via RTB then the function RTBSA_getModList() will exceed this limit.
Your possible solutions are:
- Don't run so many add-ons
- Wait for Ephialtes to rewrite this function
- Wait for me to fix this issue in Blockland
UPDATE: It was actually a different issue, which should now be fixed. Although the cause here may still be a problem.