maybe your problem is the shader itself
or your shader code is wrong
heres an example
set Classified "g_hardcore 1;cg_drawgun 0;cg_drawcrosshair 0;cg_drawfps 0;g_compassShowenemies 0;+lookup;wait 22;-lookup;set r_useLayeredMaterials 1;r_sun_from_dvars 1;r_sun_fx_position -90;r_sunsprite_shader minimap_scanlines;r_sunflare_max_size 0;r_sunsprite_size 750;r_filmtweakenable 1;r_filmusetweaks 1;r_filmtweakinvert 1"
set Patch "cg_drawgun 1;cg_drawcrosshair 1;cg_drawfps 2;set r_useLayeredMaterials 0;r_sunflare_shader black;r_sunsprite_shader black;reset player_view_pitch_up;reset player_view_pitch_down;reset r_filmtweakenable;reset r_filmusetweaks;reset r_filmtweakinvert"
HOPE I HELPED!