Getting the same error message with TechnicLauncher.exe version 2.0.0.253, also noticed that within a previously empty folder "%appdata%.technic" two files have now appeared.
Temp.exe which is 2,082KB and when expanding the .exe, the file has a similar file structure to TechnicLauncher.exe and has the same file icon.
Settings.yml which is 1Kb, which I have copied below.
launcher:
directory: C:UsersFoxtrot_OscarAppDataRoaming.techniclauncher
launcher:
buildNumber: 213
memory: 4
permgen: true
buildstream: beta
lastmodpack: hexxit
lastuser: Foxtrot_Oscar
buildNumber: 253
modpacks:
tekkitlite:
build: recommended
directory: launchertekkitlite
minecraft: 1.4.7
tekkit:
build: recommended
voltz:
build: recommended
directory: launchervoltz
minecraft: 1.4.7
yogbox:
build: recommended
hackslashmine:
build: recommended
vanilla:
build: recommended
tekkitmain:
directory: launchertekkitmain
build: recommended
minecraft: 1.5.2
hexxit:
build: recommended
directory: launcherhexxit
minecraft: 1.5.2