t1a1c (help please)

Ok let me check!

okey, according to t1a1c.log you are not using barney.wad and halflife.wad so it does not compile.

Wad files required to run the map: "barney.wad;halflife.wad;"

It seems that the textures from barney.wad did get included in the compile? Atleast there's a t1a1c.wa_ file, which after renaming to .wad I could add into J.A.C.K. and then compile the map fine(without the texture .wad the compiler just crashed, like you described).

I only got halflife.wad setup in J.A.C.K., next to xeno.wad, liquids.wad and decals.wad. And zhlt.wad, I guess barney.wad is from Blue Shift?

Well I did and still do have halflife.wad and barney.wad added to my J.A.C.K texture list.

I tried renaming t1a1c.wa_ to .wad. Exactly the same as before.

Try removing barney.wad and replace textures with those from halflife.wad

Replaced barney textures with halflife textures. Compiled. Nothing. So then I closed the map, removed barney.wad completely and opened it again. Still nothing.

If it helps, here is the compile log.

Executing...
Command: Change Directory
Parameters: C:/Program Files (x86)/Steam/steamapps/common/Half-Life/mod

Executing...
Command: C:/Program Files (x86)/Steam/steamapps/common/Half-Life SDK/Hammer Editor/tools/qcsg.exe
Parameters: "C:\Program Files (x86)\Steam\steamapps\common\Half-Life\mod\maps\t1a1c"
qcsg.exe v2.8 (Jan 31 2000)
-- qcsg --
entering C:\Program Files (x86)\Steam\steamapps\common\Half-Life\mod\maps\t1a1c.map
CreateBrush: 0...1...2...3...4...5...6...7...8...9... (0)
CSGBrush: 0...1...2...3...4...5...6...7...8...9... (0)
Using WAD File: \Program Files (x86)\Steam\steamapps\common\Half-Life\mod\OPFOR.WAD
Using WAD File: \Program Files (x86)\Steam\steamapps\common\Half-Life\mod\decals.wad
Using WAD File: \Program Files (x86)\Steam\steamapps\common\Half-Life\mod\decay.wad
Using WAD File: \Program Files (x86)\Steam\steamapps\common\Half-Life\mod\halflife.wad
Using WAD File: \Program Files (x86)\Steam\steamapps\common\Half-Life\mod\liquids.wad
Using WAD File: \Program Files (x86)\Steam\steamapps\common\Half-Life\mod\zhlt.wad
added 2 additional animating textures.

1 seconds elapsed

Executing...
Command: C:/Program Files (x86)/Steam/steamapps/common/Half-Life SDK/Hammer Editor/tools/qbsp2.exe
Parameters: "C:\Program Files (x86)\Steam\steamapps\common\Half-Life\mod\maps\t1a1c"
qbsp2.exe v2.2 (Dec 28 1998)
-- qbsp2 --
LEAK LEAK LEAK

1 seconds elapsed

Executing...
Command: C:/Program Files (x86)/Steam/steamapps/common/Half-Life SDK/Hammer Editor/tools/vis.exe
Parameters: "C:\Program Files (x86)\Steam\steamapps\common\Half-Life\mod\maps\t1a1c"
vis.exe v1.3 (Dec 30 1998)
-- vis --
2 thread(s)
LoadPortals: couldn't read C:\Program Files (x86)\Steam\steamapps\common\Half-Life\mod\maps\t1a1c.prt
No vising performed.

Executing...
Command: C:/Program Files (x86)/Steam/steamapps/common/Half-Life SDK/Hammer Editor/tools/qrad.exe
Parameters: "C:\Program Files (x86)\Steam\steamapps\common\Half-Life\mod\maps\t1a1c"
qrad.exe v 1.5 (Apr 6 2000)
--- Radiosity --
2 threads
[Reading texlights from 'C:\Program Files (x86)\Steam\steamapps\common\Half-Life SDK\Hammer Editor\tools\lights.rad']
[1 texlights parsed from 'C:\Program Files (x86)\Steam\steamapps\common\Half-Life SDK\Hammer Editor\tools\lights.rad']

No vis information, direct lighting only.
2268 faces
134248 square feet [19331748.00 square inches]
10767 patches after subdivision
17 direct lights
BuildFacelights: 0...1...2...3...4...5...6...7...8...9... (2)
FinalLightFace: 0...1...2...3...4...5...6...7...8...9... (0)

Object names Objects/Maxobjs Memory / Maxmem Fullness
---------- ------------- ------------- ------
models 22/400 1408/25600 ( 5.5%)
planes 3084/32767 61680/655340 ( 9.4%)
vertexes 3114/65535 37368/786420 ( 4.8%)
nodes 1075/32767 25800/786408 ( 3.3%)
texinfos 661/8192 26440/327680 ( 8.1%)
faces 2268/65535 45360/1310700 ( 3.5%)
clipnodes 1759/32767 14072/262136 ( 5.4%)
leaves 763/8192 21364/229376 ( 9.3%)
marksurfaces 2813/65535 5626/131070 ( 4.3%)
surfedges 11147/512000 44588/2048000 ( 2.2%)
edges 5669/256000 22676/1024000 ( 2.2%)
texdata [variable] 1632/2097152 ( 0.1%)
lightdata [variable] 429696/2097152 (20.5%)
visdata [variable] 0/2097152 ( 0.0%)
entdata [variable] 12438/131072 ( 9.5%)

Total BSP file data space used: 750148 bytes

2 seconds elapsed

Okay I will try to find where the problem is!

You're using very old compile tools, update to Vluzacn's Half-Life Tools, available here. Get that and try recompiling. There's a good chance that upgrading to better compiles tools will not fix the leak, because a leak a caused by human error.

Wow, that actually worked. Thank you Mad Carrot!

Did upgrading fix the leak? Well then.