Malwarebytes ADWCleaner is an utility to clean a PC which is infested with malware. Download it here: https://toolslib.net/downloads/finish/1/
Run a Scan, Clean anything it finds, restart the computer and come back here for further instructions.
Also make sure Windscribe is disabled while playing Minecraft
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Delete it from your _JAVA_OPTIONS enviroment variable
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Remove CraftPresence, and the error would have been caused by spaces in your usernames or having Cygwin installed, not a corrupt windows installation
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You seem to have PremierOpinion installed
Malwarebytes ADWCleaner is an utility to clean a PC which is infested with malware. Download it here: https://toolslib.net/downloads/finish/1/
Run a Scan, Clean anything it finds, restart the computer and come back here for further instructions.
Also make sure Windscribe is disabled while playing Minecraft
1
Download: https://sourceforge.net/projects/hjt/files/2.0.5 beta/HijackThis.exe/download
Run HijackThis as Administrator, choose "I accept", then "Do a system scan and save a log file". After a while a text file will open. Copy everything, put the log on https://paste.ubuntu.com and give us the link.
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Update Buildcraft Silicon
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Post the crash report
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You both have the same version of the mod installed? Also mind that opening to LAN is not the same as the server-side mod
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Crash says its on at com.mumfrey.liteloader.client.PacketEventsClient.handlePacket(PacketEventsClient.java:106)
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VillagerBehaviors from MCA is crashing
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1- Disable it
2- 64 is not a valid render distance, max is 32. 16 is pretty high(it used to be the maximum), try 8
3- Allocating more RAM makes it worse