Problem Details:
When I try to open osu it just immediately crashes. I've tried running as admin, redownloading, holding shift and then clicking repair osu, I even changed from the standard to cutting edge to see if that would work, I only have a black screen from that and then I alt+tab out of it and osu says that it has crashed.

Video or screenshot showing the problem:
System.ArgumentException: Illegal characters in path.
at System.IO.Path.CheckInvalidPathChars(String path, Boolean checkAdditional)
at System.IO.Path.Combine(String path1, String path2)
at #=qS9RJr$H$KFFQ6TuHNmslcL5VLpjW8MLRSKf4MIqhjyL95RPDCbVKJqUlICBfLGHh.#=qNGt9PtzkaQ$ueQeUggPSgizlHCGLujD2n9PUOQWVNG8=()
at #=qB9UbDyDm4N7z5uGFNBV_MvWVLe$JSnN4_VKbkS4dHZBtTA602BTlWu$kX9h$Xs9D.#=qa0tDZ1kQFNofGQ1727fuBw==.#=qmDZwxTVubJTrpKOtm3jchObvxD8rSO8Tf3JaoQiJ$bE=(#=qS9RJr$H$KFFQ6TuHNmslcL5VLpjW8MLRSKf4MIqhjyL95RPDCbVKJqUlICBfLGHh #=qZRw_MV50WI4Cs7qPGntcYg==)
at System.Collections.Generic.List`1.FindAll(Predicate`1 match)
at #=qB9UbDyDm4N7z5uGFNBV_MvWVLe$JSnN4_VKbkS4dHZBtTA602BTlWu$kX9h$Xs9D.#=qgx_KNuAFozNFRF9NZ_SrRS5jqC6YWAYHlk_opfmFgHA=()
at #=qB9UbDyDm4N7z5uGFNBV_MvWVLe$JSnN4_VKbkS4dHZBtTA602BTlWu$kX9h$Xs9D.#=qwJrZ1_dIsp_GiE2ZYuo6Sg==()
at #=qB9UbDyDm4N7z5uGFNBV_MvWVLe$JSnN4_VKbkS4dHZBtTA602BTlWu$kX9h$Xs9D.#=qjLiQNFaynv$teGZyn9p$1g==(Boolean #=qy4rIym57xqtUeI0npCh0mA==)
at #=qKSt6IJiioIr$ijXTWVytww==.#=qjLiQNFaynv$teGZyn9p$1g==()
at #=qUA6ID9_rJ31WmFLYwrPDygZmqf2L_m68tozdzyILlyQ=.#=qNh_w8u1w7VCqdcxMw4FuuA==()
at #=qkqthN3G_6NBR$XU61f$I5A==.#=qV1ADuQiyMJb3BwX$b6s1zw==(String #=q3DEMqml8ZMc5ARtmQf18dQ==, Boolean #=qZCEcrGyvdl1VcCxkkYtN4udU_ruoUUDVYpbYF$$KpVM=, Boolean #=qKhNdW60cz0eGzkEqlVJuAA==)



osu! version: 20170404.2 (latest)

System.ArgumentException: Illegal characters in path.
at System.IO.Path.CheckInvalidPathChars(String path, Boolean checkAdditional)
at System.IO.Path.Combine(String path1, String path2)
at #=qwKO4GNt6wdov6qzXuA6Z6zWfIn0kWYZ4MGx4WUu6KpvYDTkWCiJ8W8MOIvebYeh6.#=qxWSs2itj9GU7kRoY7m1T2UxO1$jKvDYLzY0noIoz_Eg=()
at #=q3bKOrjeyfWS2c4P1gI3WTe$XLzW4Dg_yi3NP0DZ4VE6iS_YiJqPoiASmkuIbfaJO.#=qkzN3xysku8EagMFrnu_$nA==.#=qNlpRYPzR8EOyNHLIvD_RCuliaGPazocASfEt0tlqRkQ=(#=qwKO4GNt6wdov6qzXuA6Z6zWfIn0kWYZ4MGx4WUu6KpvYDTkWCiJ8W8MOIvebYeh6 #=qJiE86d2Pyz20TMPXP5f1HA==)
at System.Collections.Generic.List`1.FindAll(Predicate`1 match)
at #=q3bKOrjeyfWS2c4P1gI3WTe$XLzW4Dg_yi3NP0DZ4VE6iS_YiJqPoiASmkuIbfaJO.#=qreFWEnR8yVHCR4WGgTFgkIAV_WsGNa$7YFVFv8CXXls=()
at #=q3bKOrjeyfWS2c4P1gI3WTe$XLzW4Dg_yi3NP0DZ4VE6iS_YiJqPoiASmkuIbfaJO.#=qehx1AcLbknyj35sVoWs4vQ==()
at #=q3bKOrjeyfWS2c4P1gI3WTe$XLzW4Dg_yi3NP0DZ4VE6iS_YiJqPoiASmkuIbfaJO.#=q2$W08RJMkRD61x8w583TXg==(Boolean #=qlbjOox_f47o7CzlErV2TwA==)
at #=qzlquhCm1H6ncA_YsLi4gWw==.#=q2$W08RJMkRD61x8w583TXg==()
at #=qdM15AVAWkz5qsk2CYnCWABnr0Lg8FvDHQALqJPHkdQk=.#=q6VQAec3OSLv8dmue8kL3VQ==()
at #=qxnogDSruc6FxWl2DgpoKFA==.#=qIrkrHBCPUMk4m3xJ07TSLg==(String #=q5Br5smpDHPTmyyCLuPBZJA==, Boolean #=qMTtDOSCzVP2UeS6KY2G_7S9hx7MF8grnnxfTmZlP$Xo=, Boolean #=qUOdnrqhTo$jnkOTlaXNEXg==)

Seems like there's a problem with your filepath. According to my research, apparently this means:

TheVileOne wrote:

You have a beatmap with an invalid character in the path name.

These seem to be either * or <. Please check your Songs folder.

What's your osu! folder's file path?