if i compile a hammer map without launching tf2 how do i load the map?

[Mrperson(ita)]

I have to say i just started creating maps today and of course i ran into a problem.
i have created a simple box with a spawn point inside.
when i try to run the map the compiler opens tf2 but then closes it.
i tought that running the map without opening tf2 would erase the problem but I don't know how to load a map in tf2 outside of hammer.
Then I tried to analyize the compile log with interlopers.net, but it says :

You have entered a skybox texture which doesn't seem to be valid. Make sure you don't specify the last three letter (_UP, _DN, etc) of any skybox texture you use. You may also need to fix your vmt files if they are broken. It may also be caused by compiling a non-HDR skybox texture.

don't know what to do

i have changed all textures of the box to dev/grey (wich should be considred a material)

it still gives me this error.

i know this probably isn't a complicated issue but i can't figure out anything.

this is the compile log .
(
** Executing...
** Command: "C:\Program Files (x86)\Steam\steamapps\common\Team Fortress 2\bin\vbsp.exe"
** Parameters: -game "C:\Program Files (x86)\Steam\steamapps\common\Team Fortress 2\tf" "C:\Program Files (x86)\Steam\steamapps\common\Team Fortress 2\sourcesdk_content\tf\mapsrc\box.vmf"

Valve Software - vbsp.exe (Mar 6 2018)
8 threads
materialPath: C:\Program Files (x86)\Steam\steamapps\common\Team Fortress 2\tf\materials
Loading C:\Program Files (x86)\Steam\steamapps\common\Team Fortress 2\sourcesdk_content\tf\mapsrc\box.vmf
fixing up env_cubemap materials on brush sides...
ProcessBlock_Thread: 0...1...2...3...4...5...6...7...8...9...10 (0)
ProcessBlock_Thread: 0...1...2...3...4...5...6...7...8...9...10 (0)
Processing areas...done (0)
Building Faces...done (0)
FixTjuncs...
PruneNodes...
WriteBSP...
done (0)
writing C:\Program Files (x86)\Steam\steamapps\common\Team Fortress 2\sourcesdk_content\tf\mapsrc\box.prt...Building visibility clusters...
done (0)
*** Error: Skybox vtf files for skybox/sky_tf2_04 weren't compiled with the same size texture and/or same flags!
Can't load skybox file skybox/sky_tf2_04 to build the default cubemap!
*** Error: Skybox vtf files for skybox/sky_tf2_04 weren't compiled with the same size texture and/or same flags!
Can't load skybox file skybox/sky_tf2_04 to build the default cubemap!
Finding displacement neighbors...
Finding lightmap sample positions...
Displacement Alpha : 0...1...2...3...4...5...6...7...8...9...10
Building Physics collision data...
done (0) (2293 bytes)
Placing detail props : 0...1...2...3...4...5...6...7...8...9...10
Compacting texture/material tables...
Reduced 6 texinfos to 4
Reduced 2 texdatas to 2 (57 bytes to 57)
Writing C:\Program Files (x86)\Steam\steamapps\common\Team Fortress 2\sourcesdk_content\tf\mapsrc\box.bsp
ZIP Output overshot buffer estimate: Estimated 0, actual 54
0 seconds elapsed

** Executing...
** Command: "C:\Program Files (x86)\Steam\steamapps\common\Team Fortress 2\bin\vvis.exe"
** Parameters: -game "C:\Program Files (x86)\Steam\steamapps\common\Team Fortress 2\tf" "C:\Program Files (x86)\Steam\steamapps\common\Team Fortress 2\sourcesdk_content\tf\mapsrc\box"

Valve Software - vvis.exe (Mar 6 2018)
8 threads
reading c:\program files (x86)\steam\steamapps\common\team fortress 2\sourcesdk_content\tf\mapsrc\box.bsp
reading c:\program files (x86)\steam\steamapps\common\team fortress 2\sourcesdk_content\tf\mapsrc\box.prt
4 portalclusters
4 numportals
BasePortalVis: 0...1...2...3...4...5...6...7...8...9...10 (0)
PortalFlow: 0...1...2...3...4...5...6...7...8...9...10 (0)
Optimized: 0 visible clusters (0.00%)
Total clusters visible: 16
Average clusters visible: 4
Building PAS...
Average clusters audible: 4
visdatasize:44 compressed from 64
writing c:\program files (x86)\steam\steamapps\common\team fortress 2\sourcesdk_content\tf\mapsrc\box.bsp
ZIP Output overshot buffer estimate: Estimated 0, actual 54
0 seconds elapsed

** Executing...
** Command: "C:\Program Files (x86)\Steam\steamapps\common\Team Fortress 2\bin\vrad.exe"
** Parameters: -game "C:\Program Files (x86)\Steam\steamapps\common\Team Fortress 2\tf" "C:\Program Files (x86)\Steam\steamapps\common\Team Fortress 2\sourcesdk_content\tf\mapsrc\box"

Valve Software - vrad.exe SSE (Mar 6 2018)

Valve Radiosity Simulator
8 threads
[Reading texlights from 'lights.rad']
unknown light specifier type - lights

[56 texlights parsed from 'lights.rad']

Loading c:\program files (x86)\steam\steamapps\common\team fortress 2\sourcesdk_content\tf\mapsrc\box.bsp
Setting up ray-trace acceleration structure... Done (0.00 seconds)
16 faces
10922 square feet [1572864.00 square inches]
0 Displacements
0 Square Feet [0.00 Square Inches]
16 patches before subdivision
3056 patches after subdivision
0 direct lights
BuildFacelights: 0...1...2...3...4...5...6...7...8...9...10 (0)
BuildVisLeafs: 0...1...2...3...4...5...6...7...8...9...10 (0)
transfers 316296, max 219
transfer lists: 2.4 megs
GatherLight: 0...1...2...3...4...5...6...7...8...9...10 (0)
Bounce #1 added RGB(0, 0, 0)
Build Patch/Sample Hash Table(s).....Done<0.0004 sec>
FinalLightFace: 0...1...2...3...4...5...6...7...8...9...10 (0)
FinalLightFace Done
0 of 0 (0% of) surface lights went in leaf ambient cubes.
ThreadComputeLeafAmbient: 0...1...2...3...4...5...6...7...8...9...10 (0)
Writing leaf ambient...done
Ready to Finish

Object names Objects/Maxobjs Memory / Maxmem Fullness
------------ --------------- --------------- --------
models 1/1024 48/49152 ( 0.1%)
brushes 6/8192 72/98304 ( 0.1%)
brushsides 36/65536 288/524288 ( 0.1%)
planes 40/65536 800/1310720 ( 0.1%)
vertexes 35/65536 420/786432 ( 0.1%)
nodes 27/65536 864/2097152 ( 0.0%)
texinfos 4/12288 288/884736 ( 0.0%)
texdata 2/2048 64/65536 ( 0.1%)
dispinfos 0/0 0/0 ( 0.0%)
disp_verts 0/0 0/0 ( 0.0%)
disp_tris 0/0 0/0 ( 0.0%)
disp_lmsamples 0/0 0/0 ( 0.0%)
faces 16/65536 896/3670016 ( 0.0%)
hdr faces 0/65536 0/3670016 ( 0.0%)
origfaces 6/65536 336/3670016 ( 0.0%)
leaves 29/65536 928/2097152 ( 0.0%)
leaffaces 16/65536 32/131072 ( 0.0%)
leafbrushes 16/65536 32/131072 ( 0.0%)
areas 2/256 16/2048 ( 0.8%)
surfedges 88/512000 352/2048000 ( 0.0%)
edges 57/256000 228/1024000 ( 0.0%)
LDR worldlights 0/8192 0/720896 ( 0.0%)
HDR worldlights 0/8192 0/720896 ( 0.0%)
leafwaterdata 0/32768 0/393216 ( 0.0%)
waterstrips 0/32768 0/327680 ( 0.0%)
waterverts 0/65536 0/786432 ( 0.0%)
waterindices 0/65536 0/131072 ( 0.0%)
cubemapsamples 0/1024 0/16384 ( 0.0%)
overlays 0/512 0/180224 ( 0.0%)
LDR lightdata [variable] 27264/0 ( 0.0%)
HDR lightdata [variable] 0/0 ( 0.0%)
visdata [variable] 44/16777216 ( 0.0%)
entdata [variable] 344/393216 ( 0.1%)
LDR ambient table 29/65536 116/262144 ( 0.0%)
HDR ambient table 29/65536 116/262144 ( 0.0%)
LDR leaf ambient 4/65536 112/1835008 ( 0.0%)
HDR leaf ambient 29/65536 812/1835008 ( 0.0%)
occluders 0/0 0/0 ( 0.0%)
occluder polygons 0/0 0/0 ( 0.0%)
occluder vert ind 0/0 0/0 ( 0.0%)
detail props [variable] 1/12 ( 8.3%)
static props [variable] 1/12 ( 8.3%)
pakfile [variable] 54/0 ( 0.0%)
physics [variable] 2293/4194304 ( 0.1%)
physics terrain [variable] 2/1048576 ( 0.0%)

Level flags = 0

Total triangle count: 32
Writing c:\program files (x86)\steam\steamapps\common\team fortress 2\sourcesdk_content\tf\mapsrc\box.bsp
ZIP Output overshot buffer estimate: Estimated 0, actual 54
0 seconds elapsed

** Executing...
** Command: Copy File
** Parameters: "C:\Program Files (x86)\Steam\steamapps\common\Team Fortress 2\sourcesdk_content\tf\mapsrc\box.bsp" "C:\Program Files (x86)\Steam\steamapps\common\Team Fortress 2\tf\maps\box.bsp"


** Executing...
** Command: "C:\Program Files (x86)\Steam\steamapps\common\Team Fortress 2\hl2.exe"
** Parameters: -game "C:\Program Files (x86)\Steam\steamapps\common\Team Fortress 2\tf" +map "box" -steam
)

 

[DrSquishy]

in the console, type 'map <mapname'. For you it'd be 'map box'
you can ignore that error you posted, it's harmless

 

[Mrperson(ita)]

ahhhhh oke thx