For example :
1.first :      (ql:quickload :drakma)                    -------load success
2.second:  (ql:quickload :closure-html)             -------Condition of type: SEGMENTATION-VIOLATION

And vice versa.

You load first library successfully, but failed to load second library.

Features:
(:QUICKLISP :WSOCK :ASDF2 :ASDF :ASDF-WINDOWS :ECL-BYTECMP :WIN32 :FORMATTER
 :ECL-WEAK-HASH :LITTLE-ENDIAN :LONG-LONG :UINT64-T :UINT32-T :UINT16-T
 :RELATIVE-PACKAGE-NAMES :UNICODE :DFFI :CLOS-STREAMS :CMU-FORMAT :WINDOWS
 :MSVC :ECL-PDE :DLOPEN :CLOS :THREADS :BOEHM-GC :ANSI-CL :COMMON-LISP
 :IEEE-FLOATING-POINT :PREFIXED-API :FFI :PENTIUM4 :COMMON :ECL)


ECL is built with msvc2010.