Is takecmd.dll actually missing? What are the files in your TCMD installation directory?
(TCMD.EXE also uses takecmd.dll, so if it were really missing then nothing should be working.)
no it is not missing...
sits right there in C:\Program Files\JPSoft\TCMD17x64
with a date of 2 days ago (resulting from installing the test tcmd64.exe you linked in the post above)
this is the contents of the install directory:
Microsoft Windows [Version 6.3.9600]
(c) 2013 Microsoft Corporation. Alle Rechte vorbehalten.
Clink v0.4.3 [git:258fc3] Copyright (c) 2014 Martin Ridgers
http://mridgers.github.io/clink
C:\WINDOWS\system32>c:
C:\WINDOWS\system32>cd C:\Program Files\JPSoft\TCMD17x64
C:\Program Files\JPSoft\TCMD17x64>dir
Datenträger in Laufwerk C: ist System
Volumeseriennummer: 7CF8-67BE
Verzeichnis von C:\Program Files\JPSoft\TCMD17x64
04.02.2015 11:13 <DIR> .
04.02.2015 11:13 <DIR> ..
22.02.2006 22:40 34.304 BorlndMM.dll
02.02.2015 15:24 1.734.216 English.dll
02.02.2015 15:24 688.200 EnglishD.dll
02.02.2015 15:24 75.336 Everything64.dll
02.02.2015 15:24 1.761.352 French.dll
02.02.2015 15:24 693.832 FrenchD.dll
02.02.2015 15:24 1.751.112 German.dll
02.02.2015 15:24 693.832 GermanD.dll
02.02.2015 05:20 5.494.344 ide.exe
26.05.2014 09:58 2.100.736 ipworks9.dll
26.05.2014 12:30 1.013.760 ipworksssh9.dll
26.05.2014 11:30 2.228.736 ipworksssl9.dll
26.05.2014 13:16 338.944 ipworksssnmp9.dll
26.05.2014 12:56 1.243.648 ipworkszip9.dll
05.10.2014 15:16 1.212.224 IsLicense50.dll
02.02.2015 15:24 1.749.064 Italian.dll
02.02.2015 15:24 689.736 ItalianD.dll
06.11.2014 18:45 8.589 license.txt
02.02.2015 15:24 485.376 Lua52.dll
02.02.2015 15:24 487.496 onig.dll
06.11.2014 18:44 7.384 readme.txt
04.02.2015 11:13 1.452 regid.2002-09.com.jpsoft_Take Command x64 17.0.swidtag
02.02.2015 15:24 1.798.216 Russian.dll
02.02.2015 15:24 691.272 RussianD.dll
05.11.2014 16:15 1.051.720 SciLexer.dll
02.02.2015 05:17 90.184 ShrAlias.exe
02.02.2015 15:24 1.758.280 Spanish.dll
02.02.2015 15:24 695.368 SpanishD.dll
24.01.2000 12:01 453.632 stdvcl40.dll
04.02.2015 11:13 <DIR> Styles
02.02.2015 15:24 2.390.088 takecmd.dll
02.02.2015 05:57 214.600 tcc.exe
09.01.2013 19:13 1.002 tccbatch.btm
03.04.2013 15:12 1.170 tcchere.btm
09.01.2013 19:13 1.272 tcctabhere.btm
01.02.2015 05:23 4.123.420 tcmd.chm
02.02.2015 15:21 5.986.376 tcmd.exe
09.01.2013 19:09 1.113 tcmdbatch.btm
03.04.2013 15:17 1.204 tcmdhere.btm
22.08.2013 17:01 9.004.648 textpipeengine.dll
02.02.2015 05:22 128.072 TPipe.exe
02.02.2015 15:25 593.992 updater.exe
04.02.2015 11:13 410 updater.ini
20.09.2014 01:46 496.493 v.chm
05.10.2014 04:00 2.890.312 v.exe
20.09.2014 01:46 824.392 VESP.dll
20.09.2014 01:46 820.808 VFRA.dll
20.09.2014 01:46 817.224 VITA.dll
20.09.2014 01:46 802.376 VRUS.dll
02.02.2015 15:24 302.664 WiFiMan.dll
49 Datei(en), 60.433.981 Bytes
3 Verzeichnis(se), 26.808.864.768 Bytes frei
C:\Program Files\JPSoft\TCMD17x64>