Kevin Sillerud

Not really, this bug makes it possible to place more than one minecart on one minecart track, here is a demonstration: http://www.youtube.com/watch?v=MdH4nMvPuSQ

On Windows you can just run the minecraft launcher as an administrator, the problem is that it cant open a file called "stitched_terrain.png"

here is the full stacktrace from the console
"java.io.FileNotFoundException: stitched_terrain.png (Ingen tilgang)
at java.io.RandomAccessFile.open(Native Method)
at java.io.RandomAccessFile.<init>(Unknown Source)
at javax.imageio.stream.FileImageOutputStream.<init>(Unknown Source)
at com.sun.imageio.spi.FileImageOutputStreamSpi.createOutputStreamInstan
ce(Unknown Source)
at javax.imageio.ImageIO.createImageOutputStream(Unknown Source)
at javax.imageio.ImageIO.write(Unknown Source)
at bem.c(SourceFile:312)
at beo.b(SourceFile:134)
at bcd.c(SourceFile:429)
at net.minecraft.client.Minecraft.a(SourceFile:296)
at atr.a(SourceFile:56)
at net.minecraft.client.Minecraft.run(SourceFile:506)
at java.lang.Thread.run(Unknown Source)
java.lang.NullPointerException
at javax.imageio.ImageIO.write(Unknown Source)
at bem.c(SourceFile:312)
at beo.b(SourceFile:134)
at bcd.c(SourceFile:429)
at net.minecraft.client.Minecraft.a(SourceFile:296)
at atr.a(SourceFile:56)
at net.minecraft.client.Minecraft.run(SourceFile:506)
at java.lang.Thread.run(Unknown Source)"

Edit: Seems like the texture get put into the working directory, in most cases that is in the Desktop, but i was running with a shortcut with working directory in JRE7 home directory i did not have write permission without running as administrator.