fixed installer bug (assume unchange AFTER symlink is created, not before)
fixed installer bug (assume unchange AFTER symlink is created, not before)

ubtue/ub_tools,ubtue/ub_tools,ubtue/ub_tools,ubtue/ub_tools,ubtue/ub_tools,ubtue/ub_tools,ubtue/ub_tools,ubtue/ub_tools