LA Network Manager 126.96.36.199 (full release pack dated 11th December 2013) and Presets of versions 1.X and 2.X are not compatible and must not be used with one another. Presets of versions 1.X and 2.X can exist in the form of individual Preset files, Presets stored in User memories, or as Presets contained within .system, .nwsys or .lses session files, or within .nwbnk or .lbnk Preset Bank files. Preset of versions 3.X and 4.0 are not affected by these issues.
Please refer to the INCOMPATIBILITY BETWEEN LA NWM 188.8.131.52 AND PRESETS 1.X OR 2.X technical bulletin for details. It can be downloaded from the Technical Publications tab of the Download Center and is included in the latest full release pack.