Update 5.1.13

Imediatelly after the update , all my indicators stoppped showing on chart,  i had to delte them all change to clasic candles and add them again , which fixed the problem, next what is worse,  After i compile new indicator  , it shows Compiled successfuly , but algo file is not created, only the vln and C# files.  So what now, how can i degrade this version?