It is not clear why the disk check is failing in the middle of the installation since the logs show sufficient space at the beginning of the process.
From install log, in this example:
Space needed to complete the self-extraction: 8124110 blocks
Available space: 226369536 blocks
Available blocks: 226369536 Needed blocks: 8124110 (block = 512 bytes)
The disk space check is a check that InstallAnywhere does at the beginning, and also during the installation depending on certain criteria, however, this specific issue is related to a defect in Flexera or InstallAnywhere:
Release : 10.7
Set the environment variable CHECK_DISK_SPACE=OFF before launching the installer to avoid this issue.
Other similar InstallAnyhere issues:
Installer cannot launch in localized environment (e.g. LANG=ja_JP.UTF-8)