"/" in a sinput string bug effecting MT5 optimization only (but not effecting run once non optimizations)

Benjamin Dixon  

This seems to effect optimizations only for some reason. At the top of my inputs, I have a sinput named note with this string entered in the inputs tab "Trendline.m60.2012/11 bOOS" which effectively renders all other sinput strings null at runtime. When I change my sinput named note to "Trendline.m60.2012" Everything works fine during optimizations. 
But run once non optimizations are working fine even with the naughty string in the sinput.
weird.