"Unable to open a Voukoder Pro session. Please check the log file." Error when trying to render Vegas PRO 23

This is the log file error:

2026-02-17 19:55:01 (debug) [NetworkLicenseChecker.cpp:134] License responder stopped.
2026-02-17 19:55:01 (debug) [NetworkLicenseChecker.cpp:134] License responder stopped.

Zitat von Vouk

• Did you create a Voukoder Pro config/scene?
• Did you select that exactly that scene in the VEGAS Pro template?

Yes, did both of them. Also tried different encoders.

2026-02-17 19:54:12 (info) [VoukoderPro.cpp:86] Voukoder Pro 3.0.18.0
2026-02-17 19:54:12 (info) [VoukoderPro.cpp:87] (C) 2023-2026, Daniel Stankewitz
2026-02-17 19:54:12 (info) [VoukoderPro.cpp:88] ---
2026-02-17 19:54:12 (info) [VoukoderPro.cpp:103] Deleting now all log files older than 7 days ...
2026-02-17 19:54:12 (info) [VoukoderPro.cpp:116] Finished deleting 0 log files older than 7 days.
2026-02-17 19:54:12 (info) [VoukoderPro.cpp:750] System information:

CPU(s):
Socket 0:
Vendor: AuthenticAMD
Model: AMD Ryzen 9 5900X 12-Core Processor
Cores: 12/24

Memory:
Total: 32768 MB
Free: 15531 MB
Available: 15532 MB

GPU(s):
Card 0:
Vendor: NVIDIA
Model: NVIDIA GeForce RTX 3080 Ti
Driver version: 32.0.15.8142

Storage:
Disk 0:
Vendor: (Vakiolevyasemat)
Model: Samsung SSD 980 PRO with Heatsink 2TB
Serial number: 0025_38BB_2140_4A87.
Size: 1863 GB

Operating System:
Name: Microsoft Windows 10 Pro
Version: 19045
Architecture: 64 bit
.
2026-02-17 19:55:01 (debug) [NetworkLicenseChecker.cpp:134] License responder stopped.
2026-02-17 19:55:01 (debug) [NetworkLicenseChecker.cpp:134] License responder stopped.

Couldn't paste it here because of the 10000 character limit, here's a pastebin: https://pastebin.com/As56q5GZ

This is what it looks like to me, weird thing is that asian character on the pixel aspect ratio section

Also yeah there's a Vokouder Pro folder on the left side

This is my first time using Voukoder, bought and downloaded it today

I got some more information on the log this time, hope it helps:

2026-02-17 21:35:29 (info) [VoukoderPro.cpp:86] Voukoder Pro 3.0.18.0
2026-02-17 21:35:29 (info) [VoukoderPro.cpp:87] (C) 2023-2026, Daniel Stankewitz
2026-02-17 21:35:29 (info) [VoukoderPro.cpp:88] ---
2026-02-17 21:35:29 (info) [VoukoderPro.cpp:103] Deleting now all log files older than 7 days ...
2026-02-17 21:35:29 (info) [VoukoderPro.cpp:116] Finished deleting 0 log files older than 7 days.
2026-02-17 21:35:29 (info) [VoukoderPro.cpp:750] System information:

CPU(s):
Socket 0:
Vendor: AuthenticAMD
Model: AMD Ryzen 9 5900X 12-Core Processor
Cores: 12/24

Memory:
Total: 32768 MB
Free: 24469 MB
Available: 24467 MB

GPU(s):
Card 0:
Vendor: NVIDIA
Model: NVIDIA GeForce RTX 3080 Ti
Driver version: 32.0.15.9186

Storage:
Disk 0:
Vendor: (Vakiolevyasemat)
Model: Samsung SSD 980 PRO with Heatsink 2TB
Serial number: 0025_38BB_2140_4A87.
Size: 1863 GB

Operating System:
Name: Microsoft Windows 10 Pro
Version: 19045
Architecture: 64 bit
.
2026-02-17 21:36:07 (info) [VoukoderPro.cpp:201] Validating license ...
2026-02-17 21:36:08 (info) [VoukoderPro.cpp:210] License is valid!
2026-02-17 21:36:08 (info) [VoukoderPro.cpp:211] Counting seat usage ...
2026-02-17 21:36:09 (info) [NetworkLicenseChecker.cpp:91] Active seats: 1 / 1 seats
2026-02-17 21:36:09 (debug) [NetworkLicenseChecker.cpp:119] License responder started ...
2026-02-17 21:36:09 (info) [Router.cpp:110] ### PHASE: PRE-INIT
2026-02-17 21:36:09 (debug) [InputNode.cpp:90] Filter config: buffer@0e58acd6d49044e9a29ccec080648394=width=2560:height=1440:pix_fmt=yuv420p:time_base=1/60:pixel_aspect=1/1,format=pix_fmts=yuv420p,buffersink@964d7e4f0bd84605891b3139e53509c2
2026-02-17 21:36:09 (info) [Router.cpp:120] ### PHASE: INIT
2026-02-17 21:36:09 (debug) [InputNode.cpp:160] Dumping filter graphfor NLE Track #0:
+-----------------------------------------+
| buffer@0e58acd6d49044e9a29ccec080648394 |default--[2560x1440 1:1 yuv420p]--Parsed_format_1:default
| (buffer) |
+-----------------------------------------+

+-----------------+
buffer@0e58acd6d49044e9a29ccec080648394:default--[2560x1440 1:1 yuv420p]--default| Parsed_format_1 |default--[2560x1440 1:1 yuv420p]--buffersink@964d7e4f0bd84605891b3139e53509c2:default
| (format) |
+-----------------+

+---------------------------------------------+
Parsed_format_1:default--[2560x1440 1:1 yuv420p]--default| buffersink@964d7e4f0bd84605891b3139e53509c2 |
| (buffersink) |
+---------------------------------------------+

2026-02-17 21:36:09 (info) [EncoderNode.cpp:126] Initializing video encoder: hevc_nvenc
2026-02-17 21:36:09 (info) [OutputNode.cpp:150] Successfully initialized the output format.
2026-02-17 21:36:09 (info) [Router.cpp:110] ### PHASE: PRE-INIT
2026-02-17 21:36:09 (debug) [InputNode.cpp:90] Filter config: abuffer@439cbeae818b417598bd5ca31f9f7340=sample_rate=48000:sample_fmt=flt:channel_layout=stereo,aformat=sample_fmts=fltp,abuffersink@d7ed441cc024411da752f2c39f4ffa50
2026-02-17 21:36:09 (info) [Router.cpp:120] ### PHASE: INIT
2026-02-17 21:36:09 (debug) [InputNode.cpp:160] Dumping filter graphfor NLE Track #1:
+------------------------------------------+
| abuffer@439cbeae818b417598bd5ca31f9f7340 |default--[48000Hz flt:stereo]--auto_aresample_0:default
| (abuffer) |
+------------------------------------------+

+------------------+
auto_aresample_0:default--[48000Hz fltp:stereo]--default| Parsed_aformat_1 |default--[48000Hz fltp:stereo]--abuffersink@d7ed441cc024411da752f2c39f4ffa50:default
| (aformat) |
+------------------+

+----------------------------------------------+
Parsed_aformat_1:default--[48000Hz fltp:stereo]--default| abuffersink@d7ed441cc024411da752f2c39f4ffa50 |
| (abuffersink) |
+----------------------------------------------+

+------------------+
abuffer@439cbeae818b417598bd5ca31f9f7340:default--[48000Hz flt:stereo]--default| auto_aresample_0 |default--[48000Hz fltp:stereo]--Parsed_aformat_1:default
| (aresample) |
+------------------+

2026-02-17 21:36:09 (info) [EncoderNode.cpp:126] Initializing audio encoder: aac
2026-02-17 21:36:09 (info) [Router.cpp:164] Initialization succeeded.
2026-02-17 21:36:09 (info) [Router.cpp:176] ### PHASE: PRE-OPEN
2026-02-17 21:36:09 (info) [EncoderNode.cpp:286] Registering 1 video stream(s)
2026-02-17 21:36:09 (debug) [OutputNode.cpp:309] Registered stream 964d7e4f-0bd8-4605-891b-3139e53509c2:0
2026-02-17 21:36:09 (info) [EncoderNode.cpp:286] Registering 1 audio stream(s)
2026-02-17 21:36:09 (debug) [OutputNode.cpp:309] Registered stream d7ed441c-c024-411d-a752-f2c39f4ffa50:1
2026-02-17 21:36:09 (info) [Router.cpp:187] Pre-open phase succeeded.
2026-02-17 21:36:09 (info) [Router.cpp:188] ### PHASE: OPEN
2026-02-17 21:36:09 (info) [EncoderNode.cpp:387] Opening video encoder plugin 'hevc_nvenc' with params '{"rc":"constqp","qp":15,"g":12,"bf":0,"preset":18}'
2026-02-17 21:36:09 (info) [EncoderNode.cpp:387] Opening audio encoder plugin 'aac' with params '{"rc":"cbr","b":320000,"profile":"aac_low","cutoff":17000}'
2026-02-17 21:36:09 (error) [OutputNode.cpp:204] Unable to open output:
2026-02-17 21:36:09 (error) [Router.cpp:194] Open phase failed: -11
2026-02-17 21:36:09 (info) [VoukoderPro.cpp:650] Unable to open a Voukoder Pro session. Please check the log file.

Yeah idk, maybe I forgot to put one lol

Now it's back at the original error when I tried again