Threadscope - user error out of memory

Hello!

I'm working through Simon Marlow's Parallel Haskell book and am having issues with Threadscope. I've got a 1.2 MB eventlog file (sudoku3.eventlog) and can open it in Threadscope fine. However if I zoom in more than once it always crashes with the `user error out of memory` error. I tried `threadscope --test ch8` and can zoom in and out fine with that file without it crashing. Is there is a way I can debug this further? Thanks for your assistance!

I followed instructions in section 2 here: https://wiki.haskell.org/Gtk2Hs/Mac
then step 1 here: https://wiki.haskell.org/ThreadScope#Installing_ThreadScope

Macbook Air 64 Bit OS X 10.10.2
Threadscope version 0.2.6
ghc 7.8.3

Reproduce el fallo en Threadscope 0.2.6 abriendo sudoku3.eventlog en la configuración de OS X indicada y ampliando el zoom más de una vez. Compáralo con `threadscope --test ch8`, donde el zoom funciona; se considera terminado cuando se haya identificado y resuelto el fallo de memoria insuficiente para el eventlog indicado sin romper el caso de prueba que funciona.

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