install xpdf-common planner regina3-dev isdnutils-doc mailagent Building the package cache... Initializing package resolver and worker... E: invalid version string '0.78_02-1' W: error while parsing a version for the package 'perl-modules' Scheduling requested actions... Resolving possible unmet dependencies... W: version string 'M17-1': first upstream character 'M' is not a digit W: version string 'M17-1': first upstream character 'M' is not a digit W: some solutions were dropped, you may want to increase the value of the 'cupt::resolver::max-solution-count' option E: unable to resolve dependencies, because of: libbonobo2-dev 2.14.0-3 depends on 'liborbit2-dev (>= 1:2.12.4)' -> no solutions liborbit2-dev 1:2.12.2-1 depends on 'liborbit2 (= 1:2.12.2-1)' -> removed liborbit2-dev planner 0.14.2-2 depends on 'liborbit2 (>= 1:2.14.1)' -> installed liborbit2 1:2.14.3-0.2 libbonobo2-dev 2.8.1-2 depends on 'libbonobo2-0 (= 2.8.1-2)' -> installed libbonobo2-dev 2.14.0-3 libtotem-plparser1 2.16.5-3 depends on 'libbonobo2-0 (>= 2.13.0)' -> installed libbonobo2-0 2.14.0-3 totem-xine 2.16.5-3 depends on 'libtotem-plparser1 (>= 2.16.1)' -> installed libtotem-plparser1 2.16.5-3 totem-xine 0.100-5 depends on 'xlibs (>= 4.2.1-9)' -> installed totem-xine 2.16.5-3 xlibs 4.3.0.dfsg.1-14sarge7 depends on 'libxft1' -> removed xlibs libxft1 4.3.0.dfsg.1-14sarge7 depends on 'xfree86-common' -> removed libxft1 x11-common 1:7.1.0-19 conflicts with 'xfree86-common' -> removed xfree86-common libxinerama1 1:1.0.1-4.1 depends on 'x11-common' -> installed x11-common 1:7.1.0-19 planner 0.14.2-2 depends on 'libxinerama1' -> installed libxinerama1 1:1.0.1-4.1 E: error performing the command 'install'